The Hope Standard Disc 6 Bolt Disc Brake Rotor.Our floating discs have been redesigned with a wider braking surface to enable them to be used as a replacement on many other braking systems in addition to our own. Hope Standard Disc 6 Bolt Disc Brake Rotor Features Popular amongst both performance orientated riders and those just looking for something a little different New design with wider braking surface to make them more compatible with other companies brakes Custom steel braking surface riveted to an aluminium central carrier Available in: 140, 160, 180, 183, 200, 203 and 205mm Floating design deals with changes in temperature Weight 180mm: 146g