Specification: Item Type: 4 Piston Oil Pressure Disc Brake Material: Aluminum Alloy Color: Black Application: for MTB, Bicycle Weight: Approx.986g/34.8oz Product Style: 1 Pair of 4 Piston Oil Brake (Left Rear/Right Front) + 1 Pair of Disc Brake 160mm Tubing: Front Tubing Length 800mm/31.5in, Rear Tubing Length 1400mm/55.1in Suitable: 160mm/6.3in Disc Package List: 1 x Pair of Oil Brake 16 x Screw 2 x Disc