Features1Good Features: Aluminum alloy brake lever, integrated oil cylinder design, strong sealing, reduce maintenance times, simple and beautiful appearance, lightweight design. 2Good Performance: Double acting piston all aluminum alloy, forged caliper body, both sides drive friction discs at the same time, disc storage center does not sway, brake pad automatic return function. 3Strong Braking Performance: Equipped with original reed pads, caliper protection sheets, wear resistant and sensitive, strong braking performance, each caliper is equipped with a protective sheet. 4Aluminium Alloy Material: Made of aluminium alloy material, the oil caliper actuated two way brake pad movement provides smooth braking in the wettest conditions or on the steepest descents. 5Scope of Application: Bike hydraulic disc brake can be used in the braking system of regular bicycles, mountain bikes, BMX, fixed gear bikes and road bikes.SpecificationItem Type: Bike HydraulicDiscBrakeMaterial: Aluminum Alloy, RubberColor: As Pictures ShownWeight: Approx. 400g / 14.1ozProduct Size: Approx. A Pillar 74mm / 2.9in, B Pillar 54mm / 2.1inOil Pipe Length: Approx. Front Brake Line Pipe 92cm / 36.2inBrake Oil: Mineral OilPackage List1 x Left FrontHydraulicDiscBrake1 x Hex Wrench2 x Screw