Bike Crank Bolts M18 M20 Crank Fixing Bolt Bicycle Cranket Screw Aluminum Alloy for Mountain Road Bike

High Quality: Made of aluminum alloy the surface has been electroplated high quality is excellent anti-rust and anti-corrosion. Great Process: CNC machined with high precision for burrfree finish and standard threads fits perfectly to keep water dust and other elements out Easy to Install: It is delivered with screws and can be installed on the chainring with an Allen wrench. Scope of Application: Wonderful accessory for bike chainwheel. It is used to fix the the crankset and crank of the chain wheel which is a great accessory for cycling enthusiasts.