EBC BRAKE ROTORS FLOATING SS (4166XC)EBC Pro lite discs are 100% British made using billet alloy centre hubs attached to European mill rolled heat treated and tempered stainless DB420 steel. The centre hubs are attached to the rotor ring using EBC's patented SD System (square drive) rivets that prevent distortion under heavy braking making these a perfect upgrade replacement for original discs. If your discs are fitted with an ABS ring, remove the old ring from the original rotor and