Item Descriptions:
-These bicycle chainring bolt spacers are made of aluminum alloy, wear-resistance, strong tensile strength, rust resistance, high strength and sturdy.
-It is used for mounting single chain wheels as the double chain wheel bolts are too long to lock with a wrench.
-Fit for bicycle headset, stem and chain wheel change. Fine tune the chainring to get the perfect chain alignment.
-The internal diameter is 10mm/ 0.39inch, external diameter is 12mm/ 0.47inch, thickness is 1mm/ 0.04inch or 2mm/ 0.08inch.
-Package includes 10 pieces of bike chain wheel washers.

Package:
10x Bike Chain Wheel Washers

Item Specifications:
Colour:Silver
Material:Aluminum alloy
Inner diameter:10mm/ 0.39inch
Outer diameter:12mm/ 0.47inch
Thickness:1mm/ 0.04inch / 2mm/ 0.08inch