5# Bike Crank Arm Crankset Bottom Bracket BB Axle Allen Bolt Screw for SHIMANO

Specification:

100% brand new and high quality

Name: Color tooth disc screw

Material: Aluminium alloy 6061

Tooth disk device classification: Tooth disc

Diameter: 20 mm

Weight: 9g

Color: Red/ Black/ Silver/ Gold/ Blue

Note: The diameter of the tooth disc screw is 20mm, so it can not fit for the 18mm diameter bicycle, like FC-4500, FC-5600. It is fit for SHIMANO or some same specification bicycles.