Description: 【Powerful Braking Force】: Experience a remarkable braking force of 641N, ensuring accurate stopping power during high speed descents and emergency maneuvers, enhancing your safe on every ride 【Double Piston Design】: Featuring double pistons and an aluminum alloy caliper body, this bike hydraulic disc brake set ensures balanced pad engagement with automatic reset functionality for consistent performance 【Premium Materials for Durability】: Constructed from aluminum alloy with a smooth, burrfrees finish that resists wear, this lightweight yet sturdy brake system is built to last 【Versatile Compatibility and Easy Installation】: Equipped with 800mm/1400mm oil tube suitable for various bike frame and fit for disc diameters of 140-180mm, and disc brake rotor thicknesses of 1.7-2.3mm, these brakes are ready to install 【Reliable Performance in All Conditions】: Mountain Bike Disc Brake kit for great temperature resistance properties, along with wear resistant resin cooling pads that prevent rust and deformation, these brakes deliver outstanding performance across diverse terrains like steep slopes, muddy paths, or trails Specification: Material: Aluminium Alloy, Resin   Size Chart: Oil tube length 80cm/31.50inch, 140cm/55.12inch Compatible disc diameter 14cm-18cm/5.51inch-7.09inch Disc Brake Rotor thickness 1.7mm-2.3mm/0.07inch-0.09inch Disc Brake Rotor includes 16cm/6.30inch Package Includes: 1 Bike Hydraulic Disc Brakes Set (Mechanical Line Pulling Disc Brakes Caliper with Levers) 2 Disc Brake Rotors