Steel

Features: The ventilated design of the helps to keep the disc clean, dust does not accumulate on the disc, suitable for long-distance long-term use, and stable performance. Utilizing the cross-drilling technology, the lightweight system ensures heat dissipation when used at high strength; it provides the ability to adapt to the humid environment, and the brakes reach a new level smoothly. Easy to Mount on your Disc Brake Ready Frame and Fork Excellent heat dissipation, Ideal for Shimano Alivio/Deore Disc Brake Systems Rotor Specification: Product: Bicycle Six Spike Disc Brake Rotors Material: Stainless Steel Hub/Brake Compatibility: 6-Bolt Discs Size: 160 mm, 180 mm, 203mm Opposite hole distance: 44mm Thickness: 1.8-1.9 mm Suitable for Shimano and Hayes disc brake Suitable for bo.