TRP-33 2-piece Slotted 6-Bolt Rotor. Features: Lightweight 2-piece stainless steel rotor with aluminum spider offers superior heat dissipation as well as excellent stiffness Six recessed slots create channels that allow water, mud, and other debris trapped between the pad and rotor to escape during braking for a more consistent brake feeling in mixed conditions Includes T25 Torx wrench and 6 mounting bolts Specs: Model:TRP-33 Size:180mm Color:silver/black