Product description

Allows you to remove a crank, for example, to change your bottom bracket.

One tool for most of your cranks!Compatible with Shimano Octalink, ISIS Drive and square taper.

DECATHLON

Bike crank extractor

Dhs. 99.00

Size Guide

MEN’S

Tops

Size	Chest (in)	Waist (in)
XS	33.1 – 34.3	27.6 – 28.7
S	34.6 – 35.8	29.1 – 30.3
M	36.2 – 37.4	30.7 – 31.9
L	37.8 – 40.6	32.3 – 35.0
XL	40.9 – 44.5	35.4 – 39.4
2XL	44.9 – 48.4	39.8 – 43.7
3XL	48.8 – 53.1	44.1 – 48.4

Bottoms

Size	Low hip (in)	Waist (in)
XS	31.5 – 33.5	26.0 – 28.0
S	33.9 – 35.8	28.3 – 30.3
M	36.2 – 38.2	30.7 – 32.7
L	38.6 – 40.9	33.1 – 35.0
XL	41.3 – 43.7	35.4 – 38.2
2XL	44.1 – 46.5	38.6 – 41.3
3XL	46.9 – 49.6	41.7 – 44.5

HOW TO MEASURE:

Head: Wrap a tape measure around your head, above your eyebrows. Make sure it is parallel to the floor when you're looking straight ahead.

Chest: Wrap a tape measure around your back and measure the fullest part of your chest. Make sure it's straight and parallel to the floor. Look straight ahead, tighten the tape and breathe normally.

Waist: Wrap a tape measure around the narrowest part of your waist, above your belly button. Raise your head, tighten the tape and breathe normally.

Hand: Hold a tape measure at the bend of the thumb. Wrap around your palm.

WOMEN’S

Tops

Size	Low hip (in)	Waist (in)
2XS	31.5 – 32.7	22.8 – 24.4
XS	33.1 – 34.3	24.4 – 25.6
S	34.6 – 35.8	26.0 – 27.2
M	36.2 – 37.4	27.6 – 28.7
L	37.8 – 40.6	29.1 – 33.1
XL	40.9 – 44.5	33.5 – 37.8
2XL	44.9 – 48.4	38.2 – 42.5

Bottoms

Size	Low hip (in)	Waist (in)
2XS	31.1 – 33.5	23.6 – 24.8
XS	33.5 – 35.4	25.2 – 26.8
S	35.4 – 37.8	27.2 – 28.7
M	37.8 – 40.2	29.1 – 31.1
L	40.2 – 42.5	31.5 – 33.9
XL	42.5 – 44.9	34.3 – 36.6
2XL	44.9 – 47.2	37.0 – 39.4

Bra

Size	Bust (in)	Underbust (in)
2XS	30.7 – 31.5	24.8 – 26.4
XS	31.5 – 33.5	24.8 – 28.3
S	33.5 – 35.4	26.8 – 30.3
M	35.4 – 37.4	28.7 – 32.3
L	37.4 – 39.4	30.7 – 34.3
XL	39.4 – 41.3	32.7 – 36.2
2XL	41.3 – 43.3	34.6 – 38.2

HOW TO MEASURE:

Head: Wrap a tape measure around your head, above your eyebrows. Make sure it is parallel to the floor when you're looking straight ahead.

Bust: Wrap a tape measure around your back and measure the fullest part of your bust. Make sure it's straight and parallel to the floor. Look straight ahead, tighten the tape and breathe normally.

Underbust: Directly below the bust. wrap a tape measure around the ribcage. Make sure it's straight and parallel to the floor. Raise your head, tighten the tape and breathe normally.

Waist: Wrap a tape measure around the narrowest part of your waist, above your belly button. Raise your head, tighten the tape and breathe normally.

Hips: Wrap a tape measure around the fullest part of your hips.

Hand: Hold a tape measure at the bend of the thumb. Wrap around your palm.

KIDS’

Boys

Age	Height (in)	Chest (in)	Waist (in)	Low hip (in)
6 months	24.0 – 27.2	16.5 – 16.9	14.6 – 15.2	16.5 – 17.1
9 months	27.6 – 28.3	16.9 – 17.3	15.2 – 15.6	17.1 – 17.7
12 months	28.7 – 29.5	17.3 – 17.7	15.6 – 16.1	17.7 – 18.5
18 months	29.9 – 31.9	18.1 – 18.5	16.3 – 16.9	18.5 – 19.3
24 months	32.3 – 34.6	18.9 – 19.3	17.3 – 18.1	19.3 – 20.3
2 – 3 years	35.0 – 37.4	19.7 – 20.1	18.1 – 18.9	20.3 – 20.9
3 – 4 years	37.8 – 40.2	20.5 – 21.3	19.3 – 20.1	21.3 – 22.4
4 – 5 years	40.6 – 44.1	21.7 – 22.4	20.1 – 20.9	22.8 – 24.0
5 – 6 years	44.5 – 48.0	22.8 – 23.6	20.9 – 21.7	24.4 – 25.6
7 – 8 years	48.4 – 51.2	24.4 – 24.8	21.7 – 22.4	26.0 – 27.2
8 – 9 years	51.6 – 55.1	25.2 – 26.4	22.8 – 23.6	27.6 – 28.7
10 – 11 years	55.5 – 59.1	26.8 – 28.7	24.0 – 25.2	29.1 – 30.3
12 – 13 years	59.4 – 63.0	29.1 – 31.5	25.6 – 27.2	30.7 – 33.1
14 – 15 years	63.4 – 67.7	31.9 – 34.6	27.6 – 29.1	33.5 – 35.8

Girls

Age	Height (in)	Chest (in)	Waist (in)	Low hip (in)
6 months	24.0 – 27.2	15.4 – 16.9	13.4 – 15.2	15.4 – 17.1
9 months	27.6 – 28.3	16.9 – 17.3	15.2 – 15.6	17.1 – 17.7
12 months	28.7 – 29.5	17.3 – 17.7	15.6 – 16.1	17.7 – 18.5
18 months	29.9 – 31.9	18.1 – 18.5	16.3 – 16.9	18.5 – 19.3
24 months	32.3 – 34.6	18.9 – 19.3	17.3 – 18.1	19.3 – 20.3
2 – 3 years	35.0 – 37.4	19.7 – 20.1	18.1 – 18.9	20.3 – 20.9
3 – 4 years	37.8 – 40.2	20.5 – 21.3	19.3 – 20.1	21.3 – 22.4
4 – 5 years	40.6 – 44.1	21.7 – 22.4	20.1 – 20.9	22.8 – 24.0
5 – 6 years	44.5 – 48.0	22.8 – 23.6	20.9 – 21.7	24.4 – 25.6
7 – 8 years	48.4 – 51.2	24.4 – 24.8	21.7 – 22.4	26.0 – 27.2
8 – 9 years	51.6 – 55.1	25.2 – 26.4	22.8 – 23.6	27.6 – 28.7
10 – 11 years	55.5 – 58.3	26.8 – 28.0	24.0 – 24.8	29.1 – 31.9
12 – 13 years	58.7 – 62.6	28.3 – 31.9	25.2 – 26.4	32.3 – 35.0
14 – 15 years	63.0 – 65.4	32.3 – 33.9	26.8 – 28.0	35.4 – 36.6

HOW TO MEASURE:

Height:Stand against a wall, barefoot or in socks, heels pasted to the wall. Stand right, then hold a book or flat object on the top of your head. Block the book, mark the bottom edge of the book. Measure the distance from the floor to the mark.

Head:Wrap a tape measure around your head, above your eyebrows. Make sure it is parallel to the floor when your head is straight.

Hand:Hold a tape measure at the bend of the thumb. Wrap around your palm.

FOOTWEAR

Men's Footwear

US Size	Foot length (in)	EU Size	Foot length (cm)
6	9.6	38.5	24.5
6.5	9.6	39	24.5
7	9.8	39.5	25
7.5	10	40	25.5
7.5	10	40.5	25.5
8	10.2	41	26
8.5	10.4	41.5	26.5
9	10.4	42	26.5
9.5	10.6	42.5	27
9.5	10.8	43	27.5
10	11	43.5	27.5
10.5	11	44	28
11	11.2	44.5	28.5
11.5	11.2	45	28.5
11.5	11.4	45.5	29
12	11.6	46	29.5
12.5	11.6	46.5	29.5

Women's Footwear

US Size	Foot length (in)	EU Size	Foot length (cm)
4	8.25	34	20.8
4.5	8.5	34.5	21.3
5	8.7	35	22
5.5	8.9	35.5	22.5
5.5	8.9	36	22.5
6	9.1	36.5	23
6.5	9.3	37	23.5
7	9.3	37	23.5
7.5	9.4	38	24
7.5	9.6	38.5	24.5
8	9.6	39	24.5
8.5	9.8	39.5	25
9	10	40	25.5
9	10	40.5	25.5
9.5	10.2	41	26
10	10.4	41.5	26.5
10.5	10.4	42	26.5

Unisex Footwear

Women's / Men's US Size	Foot length (in)	EU Size	Foot length (cm)
W5 / M3.5	8.6	35	21.9
W5.5 / M4	8.9	36	22.5
W6 / M4.5	9.1	36.5	23
W6.5 / M5	9.3	37	23.5
W7 / M5.5	9.3	37.5	23.5
W7.5 / M6	9.4	38	24
W8 / M6.5	9.6	39	24.5
W8.5 / M7	9.8	39.5	25
W9 / M7.5	10	40	25.5
W9.5 / M8	10.2	41	26
W10 / M8.5	10.4	41.5	26.5
W10.5 / M9	10.4	42	26.5
W11 / M9.5	10.8	43	27.5
W11.5 / M10	11	43.5	27.5
W12 / M10.5	11	44	28
W12.5 / M11	11.2	44.5	28.5
W13 / M11.5	11.2	45	28.5
W14 / M12	11.6	46	29.5
W15 / M13	11.8	47	30
W16 / M13.5	12	48	30.5

HOW TO MEASURE:

Foot length:Stand against a wall, heels touching the wall. Put an object (e.g. book...) against your longest toe. Measure the length between the wall and the object. Repeat this process for the other foot. If the lengths are different, choose the largest.

ACCESSORIES

Headwear (Caps, Beanies, Hats)

US Size	Head (in)
2XS	18.5 – 19.7
XS	19.7 – 20.9
S	20.9 – 22.0
M	22.0 – 23.2
L	23.2 – 24.4

Helmets

US Size	Head (in)
2XS	17.3 – 19.3
XS	18.5 – 20.5
S	20.5 – 21.7
M	21.7 – 23.2
L	23.2 – 24.4

Gloves

Size	Palm perimeter (in)	Hand length (in)
2XS	7.0 – 7.3	6.3 – 6.6
XS	7.3 – 7.6	6.7 – 6.9
S	7.6 – 7.9	7.0 – 7.2
M	8.0 – 8.2	7.2 – 7.4
L	8.3 – 8.5	7.4 – 7.7
XL	8.6 – 8.9	7.7 – 7.9
2XL	8.9 – 9.2	8.0 – 8.1
3XL	9.2 – 9.5	8.2 – 8.4

HOW TO MEASURE:

Head:Wrap a tape measure around your head, above your eyebrows. Make sure it is parallel to the floor when your head is straight.

Hand:Hold a tape measure at the bend of the thumb. Wrap around your palm.

BIKES

Kids' Bikes

Bike size	Height (ft)
12"	2'5" – 3'0"
14"	3'0" – 3'5"
16"	3'5" – 3'11"
20"	3'11" – 4'5"
24"	4'5" – 5'1"

Road & Gravel Bikes

Bike size	Height (ft)
XS	5'1" – 5'5"
S	5'5" – 5'8"
M	5'8" – 5'11"
L	5'11" – 6'2"
XL	6'2" – 6'7"

Mountain Bikes

Bike size	Height (ft)
S	4'11" – 5'5"
M	5'5" – 5'9"
L	5'9" – 6'0"
XL	6'0" – 6'7"

Size Guide

MEN’S

Tops

Size	Chest (in)	Waist (in)
XS	33.1 – 34.3	27.6 – 28.7
S	34.6 – 35.8	29.1 – 30.3
M	36.2 – 37.4	30.7 – 31.9
L	37.8 – 40.6	32.3 – 35.0
XL	40.9 – 44.5	35.4 – 39.4
2XL	44.9 – 48.4	39.8 – 43.7
3XL	48.8 – 53.1	44.1 – 48.4

Bottoms

Size	Low hip (in)	Waist (in)
XS	31.5 – 33.5	26.0 – 28.0
S	33.9 – 35.8	28.3 – 30.3
M	36.2 – 38.2	30.7 – 32.7
L	38.6 – 40.9	33.1 – 35.0
XL	41.3 – 43.7	35.4 – 38.2
2XL	44.1 – 46.5	38.6 – 41.3
3XL	46.9 – 49.6	41.7 – 44.5

HOW TO MEASURE:

Head: Wrap a tape measure around your head, above your eyebrows. Make sure it is parallel to the floor when you're looking straight ahead.

Waist: Wrap a tape measure around the narrowest part of your waist, above your belly button. Raise your head, tighten the tape and breathe normally.

Hand: Hold a tape measure at the bend of the thumb. Wrap around your palm.

WOMEN’S

Tops

Size	Low hip (in)	Waist (in)
2XS	31.5 – 32.7	22.8 – 24.4
XS	33.1 – 34.3	24.4 – 25.6
S	34.6 – 35.8	26.0 – 27.2
M	36.2 – 37.4	27.6 – 28.7
L	37.8 – 40.6	29.1 – 33.1
XL	40.9 – 44.5	33.5 – 37.8
2XL	44.9 – 48.4	38.2 – 42.5

Bottoms

Size	Low hip (in)	Waist (in)
2XS	31.1 – 33.5	23.6 – 24.8
XS	33.5 – 35.4	25.2 – 26.8
S	35.4 – 37.8	27.2 – 28.7
M	37.8 – 40.2	29.1 – 31.1
L	40.2 – 42.5	31.5 – 33.9
XL	42.5 – 44.9	34.3 – 36.6
2XL	44.9 – 47.2	37.0 – 39.4

Bra

Size	Bust (in)	Underbust (in)
2XS	30.7 – 31.5	24.8 – 26.4
XS	31.5 – 33.5	24.8 – 28.3
S	33.5 – 35.4	26.8 – 30.3
M	35.4 – 37.4	28.7 – 32.3
L	37.4 – 39.4	30.7 – 34.3
XL	39.4 – 41.3	32.7 – 36.2
2XL	41.3 – 43.3	34.6 – 38.2

HOW TO MEASURE:

Head: Wrap a tape measure around your head, above your eyebrows. Make sure it is parallel to the floor when you're looking straight ahead.

Underbust: Directly below the bust. wrap a tape measure around the ribcage. Make sure it's straight and parallel to the floor. Raise your head, tighten the tape and breathe normally.

Waist: Wrap a tape measure around the narrowest part of your waist, above your belly button. Raise your head, tighten the tape and breathe normally.

Hips: Wrap a tape measure around the fullest part of your hips.

Hand: Hold a tape measure at the bend of the thumb. Wrap around your palm.

KIDS’

Boys

Age	Height (in)	Chest (in)	Waist (in)	Low hip (in)
6 months	24.0 – 27.2	16.5 – 16.9	14.6 – 15.2	16.5 – 17.1
9 months	27.6 – 28.3	16.9 – 17.3	15.2 – 15.6	17.1 – 17.7
12 months	28.7 – 29.5	17.3 – 17.7	15.6 – 16.1	17.7 – 18.5
18 months	29.9 – 31.9	18.1 – 18.5	16.3 – 16.9	18.5 – 19.3
24 months	32.3 – 34.6	18.9 – 19.3	17.3 – 18.1	19.3 – 20.3
2 – 3 years	35.0 – 37.4	19.7 – 20.1	18.1 – 18.9	20.3 – 20.9
3 – 4 years	37.8 – 40.2	20.5 – 21.3	19.3 – 20.1	21.3 – 22.4
4 – 5 years	40.6 – 44.1	21.7 – 22.4	20.1 – 20.9	22.8 – 24.0
5 – 6 years	44.5 – 48.0	22.8 – 23.6	20.9 – 21.7	24.4 – 25.6
7 – 8 years	48.4 – 51.2	24.4 – 24.8	21.7 – 22.4	26.0 – 27.2
8 – 9 years	51.6 – 55.1	25.2 – 26.4	22.8 – 23.6	27.6 – 28.7
10 – 11 years	55.5 – 59.1	26.8 – 28.7	24.0 – 25.2	29.1 – 30.3
12 – 13 years	59.4 – 63.0	29.1 – 31.5	25.6 – 27.2	30.7 – 33.1
14 – 15 years	63.4 – 67.7	31.9 – 34.6	27.6 – 29.1	33.5 – 35.8

Girls

Age	Height (in)	Chest (in)	Waist (in)	Low hip (in)
6 months	24.0 – 27.2	15.4 – 16.9	13.4 – 15.2	15.4 – 17.1
9 months	27.6 – 28.3	16.9 – 17.3	15.2 – 15.6	17.1 – 17.7
12 months	28.7 – 29.5	17.3 – 17.7	15.6 – 16.1	17.7 – 18.5
18 months	29.9 – 31.9	18.1 – 18.5	16.3 – 16.9	18.5 – 19.3
24 months	32.3 – 34.6	18.9 – 19.3	17.3 – 18.1	19.3 – 20.3
2 – 3 years	35.0 – 37.4	19.7 – 20.1	18.1 – 18.9	20.3 – 20.9
3 – 4 years	37.8 – 40.2	20.5 – 21.3	19.3 – 20.1	21.3 – 22.4
4 – 5 years	40.6 – 44.1	21.7 – 22.4	20.1 – 20.9	22.8 – 24.0
5 – 6 years	44.5 – 48.0	22.8 – 23.6	20.9 – 21.7	24.4 – 25.6
7 – 8 years	48.4 – 51.2	24.4 – 24.8	21.7 – 22.4	26.0 – 27.2
8 – 9 years	51.6 – 55.1	25.2 – 26.4	22.8 – 23.6	27.6 – 28.7
10 – 11 years	55.5 – 58.3	26.8 – 28.0	24.0 – 24.8	29.1 – 31.9
12 – 13 years	58.7 – 62.6	28.3 – 31.9	25.2 – 26.4	32.3 – 35.0
14 – 15 years	63.0 – 65.4	32.3 – 33.9	26.8 – 28.0	35.4 – 36.6

HOW TO MEASURE:

Head:Wrap a tape measure around your head, above your eyebrows. Make sure it is parallel to the floor when your head is straight.

Hand:Hold a tape measure at the bend of the thumb. Wrap around your palm.

FOOTWEAR

Men's Footwear

US Size	Foot length (in)	EU Size	Foot length (cm)
6	9.6	38.5	24.5
6.5	9.6	39	24.5
7	9.8	39.5	25
7.5	10	40	25.5
7.5	10	40.5	25.5
8	10.2	41	26
8.5	10.4	41.5	26.5
9	10.4	42	26.5
9.5	10.6	42.5	27
9.5	10.8	43	27.5
10	11	43.5	27.5
10.5	11	44	28
11	11.2	44.5	28.5
11.5	11.2	45	28.5
11.5	11.4	45.5	29
12	11.6	46	29.5
12.5	11.6	46.5	29.5

Women's Footwear

US Size	Foot length (in)	EU Size	Foot length (cm)
4	8.25	34	20.8
4.5	8.5	34.5	21.3
5	8.7	35	22
5.5	8.9	35.5	22.5
5.5	8.9	36	22.5
6	9.1	36.5	23
6.5	9.3	37	23.5
7	9.3	37	23.5
7.5	9.4	38	24
7.5	9.6	38.5	24.5
8	9.6	39	24.5
8.5	9.8	39.5	25
9	10	40	25.5
9	10	40.5	25.5
9.5	10.2	41	26
10	10.4	41.5	26.5
10.5	10.4	42	26.5

Unisex Footwear

Women's / Men's US Size	Foot length (in)	EU Size	Foot length (cm)
W5 / M3.5	8.6	35	21.9
W5.5 / M4	8.9	36	22.5
W6 / M4.5	9.1	36.5	23
W6.5 / M5	9.3	37	23.5
W7 / M5.5	9.3	37.5	23.5
W7.5 / M6	9.4	38	24
W8 / M6.5	9.6	39	24.5
W8.5 / M7	9.8	39.5	25
W9 / M7.5	10	40	25.5
W9.5 / M8	10.2	41	26
W10 / M8.5	10.4	41.5	26.5
W10.5 / M9	10.4	42	26.5
W11 / M9.5	10.8	43	27.5
W11.5 / M10	11	43.5	27.5
W12 / M10.5	11	44	28
W12.5 / M11	11.2	44.5	28.5
W13 / M11.5	11.2	45	28.5
W14 / M12	11.6	46	29.5
W15 / M13	11.8	47	30
W16 / M13.5	12	48	30.5

HOW TO MEASURE:

ACCESSORIES

Headwear (Caps, Beanies, Hats)

US Size	Head (in)
2XS	18.5 – 19.7
XS	19.7 – 20.9
S	20.9 – 22.0
M	22.0 – 23.2
L	23.2 – 24.4

Helmets

US Size	Head (in)
2XS	17.3 – 19.3
XS	18.5 – 20.5
S	20.5 – 21.7
M	21.7 – 23.2
L	23.2 – 24.4

Gloves

Size	Palm perimeter (in)	Hand length (in)
2XS	7.0 – 7.3	6.3 – 6.6
XS	7.3 – 7.6	6.7 – 6.9
S	7.6 – 7.9	7.0 – 7.2
M	8.0 – 8.2	7.2 – 7.4
L	8.3 – 8.5	7.4 – 7.7
XL	8.6 – 8.9	7.7 – 7.9
2XL	8.9 – 9.2	8.0 – 8.1
3XL	9.2 – 9.5	8.2 – 8.4

HOW TO MEASURE:

Head:Wrap a tape measure around your head, above your eyebrows. Make sure it is parallel to the floor when your head is straight.

Hand:Hold a tape measure at the bend of the thumb. Wrap around your palm.

BIKES

Kids' Bikes

Bike size	Height (ft)
12"	2'5" – 3'0"
14"	3'0" – 3'5"
16"	3'5" – 3'11"
20"	3'11" – 4'5"
24"	4'5" – 5'1"

Road & Gravel Bikes

Bike size	Height (ft)
XS	5'1" – 5'5"
S	5'5" – 5'8"
M	5'8" – 5'11"
L	5'11" – 6'2"
XL	6'2" – 6'7"

Mountain Bikes

Bike size	Height (ft)
S	4'11" – 5'5"
M	5'5" – 5'9"
L	5'9" – 6'0"
XL	6'0" – 6'7"

Color : Unique

Size: Unique size

Ref: 8350528

Variant

In stock

Home Delivery 4 - 6 Days

Up to 2-year warranty

Secure Payments

Product description

Allows you to remove a crank, for example, to change your bottom bracket.

One tool for most of your cranks!Compatible with Shimano Octalink, ISIS Drive and square taper.

Description

Allows you to remove a crank, for example, to change your bottom bracket.

Features:

Length: 165 mm Width: 44 mm Thickness: 24 mm Weight: 190 g Material: Thermally hardened steel tool and plastic handle.

Compatibility:

Suitable for a standard adjustable wrench or a 17 mm wrench. Compatible crank types (e.g. Square taper, Octalink, ISIS)

What is this tool for?

The crank extractor is used to remove cranks from bicycle.It allows for clean removal without damaging the thread.

Advice from our team:

On the bike, loosen and remove the crank bolt with the Allen key side of the tool. Make sure that the crank thread is clean and fully threaded to avoid damaging the crank. Then screw the extractor fully and firmly into the crank.It is important that the tool is screwed in correctly, otherwise the thread on the crank may be stripped during the next step. Finally, screw in the push pin to remove the crank.

Warranty:

2 years

One tool for most of your cranks!Compatible with Shimano Octalink, ISIS Drive and square taper.

Easy assembly / dismantling

8 mm Hex bit to remove the bottom bracket spindle bolt.

Compatibility

Shimano Octalink fluted and ISIS drive, square-taper cranks.

Robustness

High-quality, heat-treated, machined steel part.

Allows you to remove a crank, for example, to change your bottom bracket.

Features:

Length: 165 mm Width: 44 mm Thickness: 24 mm Weight: 190 g Material: Thermally hardened steel tool and plastic handle.

Compatibility:

Suitable for a standard adjustable wrench or a 17 mm wrench. Compatible crank types (e.g. Square taper, Octalink, ISIS)

What is this tool for?

The crank extractor is used to remove cranks from bicycle.It allows for clean removal without damaging the thread.

Advice from our team:

Warranty:

2 years

One tool for most of your cranks!Compatible with Shimano Octalink, ISIS Drive and square taper.

Easy assembly / dismantling

8 mm Hex bit to remove the bottom bracket spindle bolt.

Compatibility

Shimano Octalink fluted and ISIS drive, square-taper cranks.

Robustness

High-quality, heat-treated, machined steel part.

Allows you to remove a crank, for example, to change your bottom bracket.