1Good Performance: Good wear resistance, low noise, fast cooling, excellent braking performance under various harsh conditions. 2Strong Braking Force: With strong braking force, it will make you safer and more comfortable on mountain bikes. 3High Quality Material: Practical aluminum alloy material, sturdy and durable, fast braking, and timely restart. 4Ideal Replacement: The bicycle hydraulic brake is an ideal replacement part for mountain bike brakes, and it is easy to assemble. 5Scope of Application: Mainly used in the braking system of ordinary bicycles, mountain bicycles and road bicycles. Item Type: Bicycle Hydraulic Brake Material: Aluminum Alloy Tubing: Front Brake: Approx. 760mm/29.2in Rear Brake: Approx. 1350mm/53.1in A Pair of Left Front Right Back 1 x Front Brake 1 x Rear Brake 2 x Mounting Seat 2 x Disc Brake Disc 12 x Small Screw 8 x Large Screw 8 x Washer 4 x Accessories Before installation, please do not remove the pad and squeeze the brake lever empty, otherwise it will cause oil leakage or scrap the oil disc.Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.