1、6 Pawls Disc Brake Hub: 6 pawls 72 ring freehub base drive system, sound is clear and sweet, efficient pedaling, faster riding. 2、High Accuracy: Bike disc brake hub, the ultra smooth surface in the contact area can achieve high accuracy, low friction rotating seals. 3、Stable and Reliable: Regardless of the driving conditions, it can provide amazing long term reliability and excellent smoothness. 4、Exquisite Manufacturing: Strict craftsmanship, and overall excellent workmanship. It is a very good mountain bike accessory. 5、Durable Material: Aluminum alloy bicycle disc brake hub, lightweight and anodized, response speed is faster, the force is more even. Item Type: Bike Front and Rear Hub Color: As Pictures Shown Material: Aluminum Alloy Weight: Approx.552g/19.5oz Speed: 8-9-10-11 Speed Specifications: Front: 2 Bearing, Rear: 4 Bearing Appearance: Cnc Machined, Anodized Bright Black, Tapered Front Hub : Approx. 100x15mm/3.9x0.6in Rear Hub: Approx. 142x12mm/5.6x0.5in Tower Base: 6 Claw Aluminum Freehub Base, 72 Rings Number of Holes: Front 32 Holes / Rear 32 Holes Elbow Oblique Pull Brake Disc: Suitable for 6 Bolts Disc Brake Features: Free Conversion of Specifications Through the Shaft Cap (Shaft 142 and Quick Release 135 Can Be Converted) 1 x Front Hub 1 x Rear Hub 1 x Washer