Description If you love Sports and ride bike,we will provide this one, and it will give you much surprise.This is a mountain bike road bike fixed gear DIY modified accessories, made by material, durable, rustproof and have good appearance. Feature - Color: Blue. - Material: Aluminium Alloy. - Size: 1.50X0.90X0.90cm/0.59X0.35X0.35in -Made of aluminum alloy material, light weight, high strength and durable. - Easy installation, fit quick release screw nut.It is suitable for bike rear hub. - Unique appearance, personality, corrosion-resistant. - 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. Package list: 2 x Screw(Hub Nut)