Stay Strong Disc Brake kit. Complete disc brake system/kit includes, Left Hand Lever, Cable, Caliper, Rotor and bolts. All Stay Strong designed and branded. Designed for BMX using a 120mm Rotor (Rotor also sold separately). Fluid - Mineral Oil, Replacement Pads - SHIMANO Deore M515 / M475 / M395 / C501 / C601 / M525, TEKTRO Auriga / Aquila / Gemini / HDC300(WS), PROMAX DSK-909 / SOLVE / LUCID / DECODE R, Weight (inc fluid): 389g