1、Oil pressure drive, automatic return function, good sealing and performance. 2、Brake hose length: Front 800mm; Rear 1450mm. 3、Aluminum alloy with CNC machining provides strength, ruggedness, and corrosion resistance. 4、Adjustment knob reduces the distance between brake pads, no need to replace the brake pad. 5、Fit 22.2mm diameter handlebar, suitable for most mountain bikes. Features: Oil pressure drive, automatic return function, good sealing and performance. Brake hose length: Front 800mm; Rear 1450mm. Aluminum alloy with CNC machining provides strength, ruggedness, and corrosion resistance. Adjustment knob reduces the distance between brake pads, no need to replace the brake pad. Fit 22.2mm diameter handlebar, suitable for most mountain bikes. Specifications: Material: Aluminum alloy Color: Black / Red (optional) Type: Front left & Rear right / Front right & Rear left (optional) Brake Type: Oil pressure Caliber: 22.2mm outer diameter handlebar Suitable for rotor: 160mm (6 pins, universal for medium lock disc) Tubing Length: Front 800mm; Rear 1450mm Weight: Front 268g; Rear 284g Total Weight: 552g Package List: 1 * Pair of Bicycle Brake 1 * Pair of Disc Brake Rotor 1 * Pair of Bicycle Brake 1 * Pair of Disc Brake Rotor