Tektro TR-160-7 Wave Disc Brake Rotor 160mm 6-BoltThe Tektro TR-160-7 160mm 6-Bolt Disc Wave Brake Rotor is made of stainless steel and so it has an excellent heat dispersion and tolerance. There are 6 T25 torx bolts to keep the rotor in place. There are multiple drillings to reduce the weight and keep the rotor clean. Lightweight: weighs only 136 grams.4717592013511