The MCS Aluminum Single Chainring Bolts come in a set of 5 male/female bolts. The inside measures 4mm when tightened, and they have a total height of 7mm. These bolts are anodized aluminum and designed for single chainring bicycles, like BMX and track bikes.
BMXGuru.com / C&W Cycle
702 North St.
Morenci, MI 49256
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