Description Features: Waterproof bottom bracket nuts for mountain bikes can effectively prevent water, sand, dust, etc. from entering the bottom bracket, effectively increasing the service life of the bottom bracket. Mountain bike road bike dead-speed bottom axle steel waterproof screw, diameter 8mm, suitable for ordinary square hole bottom axle, bottom axle is not suitable, use two screws on bottom axle Specifications: Material: Steel Weight: about 13g Application: Bicycle square hole central Suitable for 8mm wrench Package Contents: screw*2
