Description: No doubt, our product can provide you a stylish appearance because of the CNC process is adopted, and it also has high precision at the same time. It also can enhance the conductivity and light reflectivity due to the anode process is adopted. Surely, our product can be used for a long time because it has good wear resistance and corrosion resistance, and it also has a compact structure at the same time. It is made from aluminum alloy, is durable to use. The length of the product is 13.5 cm. Applicable to bicycle and mountain bike. The tower base is suitable for 9-13 speed flywheel. Item Name: Mountain Bike Hub Material: Aluminum Alloy Features: Ultra-light, Anti-rust, High Hardness Color: Black Holes Number: 32h Perlin: 4 Perlin Size Details: Mountain Bike Hub Length: 13.5cm/5.31"(Approx.) Quick Release: 13.5cm x 1cm/5.31" x 0.39" (Approx.) Drum Shaft Size: 13.5cm x 1.2cm/5.31" x 0.47"/ 14.2cm x 1.2cm/5.59" x 0.47" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Rear Mountain Bike Hub 1 x Quick Release Lever 1 x Washer 4 x End Cap