DescriptionThis item is a pack of mechanical rear disc brake with some screws which are made of good materials. This rotor has a nice shape and color. It is durable for long-lasting use, you can buy it with a reasonable price. The electroplating process is anti-oxidation and colorful, giving you a different cycling experience.Features-Color: Black -Material: Metal, plastic -Size: About16.00X16.00X0.10cm/6.29X6.29X0.04inch - Manufactured with high-end material, it has excellent and high durability and practicality for usage.- The hollow design helps the sediment and rainwater to be discharged quickly. -The obliquely long and large hollow design increases the friction coefficient of the disc. -Even if the disc brake is pulled by the line, it can also cooperate with a good braking effect. -This product has multi-spoke support angle design reduces deflection and deformation.