Nice for your bike.

Features:
Aluminum alloy material， useful and strong.
Suit for most of shimano crank arm.

Specifications:
Material: Aluminum Alloy
Color: Blue / Red / Yellow(optional)
Inner Diameter: 1.7cm / 0.67in
Outer Diameter: 2.7cm / 1.06oz
Height: 1.1cm / 0.43in
Item Weight: 6g / 0.20oz
Package Size: 12.5 * 10 * 1.5cm / 4.92 * 3.94 * 0.59in
Package Weight: 20g / 0.72oz

Package List:
1 * Crankset Screw