AFTERPARTZ NV-5 G3/ HS1 Bike Disc Brake Kit Front and Rear 160mm Caliper Rotor BB5 BB7 BB-5 BB-7 Germany TV certificate high quality, bike mechanical disc brake kit. 12Cr13 martensitic stainless steel, 160mm 6 bolt Standard 44MM & 22MM pitch-row disc, perfect flatness and incredibly smooth. Cold forged double bent lever blade, 85mm front and 145mm rear brake stainless steel PTFE coated cable. Fits good and very easy to adjust and instal, no need with professional skills. Also, we provide straightforward user manual, help you install the kits like a breeze.