Feature: 1. 4 pistons and dual side brake system for stable and strong braking force. 2. Integrated design for brake lever and oil tube prevent oil leak. 3. Aluminum alloy construction for durability. 4. Fit for 160mm bike rotor(not included). 5. Suitable for most mountain bikes. 6. Left/Right brake lever fit for 22.2mm handlebars. Specification: Features: 4 pistons and dual side brake system for stable and strong braking force. Integrated design for brake lever and oil tube prevent oil leak. Aluminum alloy construction for durability. Fit for 160mm bike rotor(not included). Suitable for most mountain bikes. Left/Right brake lever fit for 22.2mm handlebars. Specification: Color: Black / Red (optional) Model: Set 1 / Set 2 (optional) Set 1: Front Caliper For Right Brake Lever + Rear Caliper For Left Brake Lever Set 2: Rear Caliper For Right Brake Lever + Front Caliper For Left Brake Lever Model: HB-876 Material: Aluminum alloy Oil tube length: (Front Caliper)80cm / (Rear Caliper)140cm Applicable Handle Diameter: 22.2 mm Applicable Rotors Size: 160 mm Weight: approx. 620 g / 21.9 oz Package List: 2* Oil Disc Brake Set 4* Screw NOTE: 1.Please gently remove the protective film before installation. 2.Do not press the brake handle without any conservation,otherwise the oil will leak. Package List: 2* Oil Disc Brake Set 4* Screw NOTE: 1.Please gently remove the protective film before installation. 2.Do not press the brake handle without any conservation,otherwise the oil will leak.