2PCS Shimano Deore 160mm SM-RT56-S Disc Brake Rotor 6-Bolt Stainless Steel Rotors For Mountain Bike Material: stainless steel, Thickness: 1.9mm 6-Bolt Mounting, fits front or rear wheel Resin pad only, mounts to six-bolt hubs, includes 6pcs rotor fixing bolts Excellent heat dissipation, Ideal for Shimano Alivio/Deore Disc Brake Systems One included: 1 x 160mm Rotor, 6 x Bolts