Storm HC rotors are precisely machined for predictable braking under extreme forces. 2.0mm thickness,Includes 6 rotor bolts Works for all brake models except Gustav Hub/Disc Compatibility: 6-Bolt Disc Rotor Type: One Piece Pad Compatibility: All Pad Compounds Weight: 127 g If your new rotors are a different size than the ones you&';re replacing, then you&';ll need new brake adapters! Check out our guide to getting the right brake adapters to spend less time on the computer and more on the trails.