This is an optional XRAY Ultra Efficient Glued Brake Pad Set, and is intended for use with the XRAY XB9 1/8 Scale Buggy. These factory pre-assembled high-precision, ultra-efficient steel brake pads are CNC-machined and precision ground on both sides for an ultra-smooth surface finish to guarantee maximum braking efficiency, consistency and precision. Also, the brake pad backing plates are heat-treated for maximum lifespan and the special high-grip brake pad material is specially bonded to the backing plates for high resistance to the generated heat build-up. Features: