Features1 Material: High strength titanium alloy material, fine workmanship, high hardness, not easy to deform. 2Treated: Anodic oxidation treatment, bright color, corrosion resistance, not easy to fade over time. 3Compact and Portable: Compact in shape, light and portable, does not take up space, and can be placed anywhere. 4Product Application: Cycling crank bolt is suitable for square hole central shaft, crankset, crank waterproof fixed screw. 5Product Specifications: Cycling crank screws specifications is M8x15mm, the optional colors are colorful, gold, black.SpecificationItem Type: Cycling Square Hole Center Shaft Waterproof ScrewProduct Material: Titanium AlloyProduct Specifications: M8x15mmWeight: Approx. 50g/1.8ozProduct Application: Square Hole Central Shaft, Crankset, Crank Water proof Fixed ScrewPackage List2 x Screw2 x Washer