* Unique appearance, personality, corrosion-resistant. * Easy installation, fit bicycle quick release screw nut.It is suitable for bike rear hub. * Mountain bike road bike fixed gear DIY modified accessories. * Made of aluminum alloy material, light weight, high strength and durable. * This serves to distribute the pressure of the nut over the part being secured, reducing the chance of damage to the part and making it less likely to loosen as a result of an uneven fastening surface. Product description Description: - Made of aluminum alloy material, light weight, high strength and durable. - Unique appearance, personality, corrosion-resistant. - Easy installation, fit bicycle quick release screw nut.It is suitable for bike rear hub. - This serves to distribute the pressure of the nut over the part being secured, reducing the chance of damage to the part and making it less likely to loosen as a result of an uneven fastening surface. - Mountain bike 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/0.41inch - Nut Hight:Approx.3.6mm/0.14inch Package Includes: 4 Pieces Bicycle Hubs Nut Note: Please allow slightly difference due to manual measurement. Color may be slightly different since different monitor. Thanks!