Description:

Made of quality aluminum alloy; wear resistance, strong tensile strength

Corrosion and rust resistance, high strength and sturdy

It is used to mount single chain wheel because the double chain wheel screws is too long to lock by wrench

Suitable for bike headset, stem, and chain wheel changing

Inner Diameter: 10mm/0.39inch; Outer Diameter: 12mm/0.47inch; Thickness: 2mm

Size Chart:

1.2cm/0.47inch

Package Includes:

10 Pieces Bicycle Crankset Gaskets

Note:

Please allow slightly errors due to manual measurement and different monitors.