Bolts -4pcs Bike Hub Nut M10 Folding Fixed Bike Sprocket Wheel Hub Screw Axle Red Highlights Generic Brand 4pcs Bike Hub Nut M10 Folding Bike Fixed Sprocket Wheel Hub Screw Axle Red Description: Made in aluminum alloy, light weight, high strength and durable. Unique appearance, personality, corrosion resistant. Easy installation, suitable for bicycle quick release nut. It is suitable for bicycle rear hub. This serves to distribute the pressure of the nut over the part being fastened, reducing the chance of damaging the part and making it less likely to loosen as a result of an uneven fastening surface. MTB road bike fixed gear DIY modified accessories. Specification: Material: Aluminum Alloy Screw Height: Approx. 9mm / 0.35inch Screw outer diameter: approx. 15mm / 0.59inch Nut Outer Diameter: approx. 22mm / 0.87inch Nut Inner Diameter: Approx. 10.5mm Nut Height: Approx.3.6mm Package Includes: 4 Pcs Bike Hubs Nut Note: Please allow slight difference due to manual measurement. The color may be slightly different since different monitor. THANKS!