Features: 4 metal pistons, more stable and efficient. Left for front, right for rear.
2.3mm thick rotors, with heat resistance, rigidity, and brake. Suitable for 22.2mm bike handlebars. Specifications: Material: Metal Disc Rotor: 160 / 180 / 203mm (optional) Front Hose: 850mm Rear Hose: 1750mm Package Size: 24 20 7cm / 9.4 7.9 2.8in Package Weight: 1270g - 1498g / 2.8lb - 3.3lb Package List: 1 Pair of Brake with Hose 1 Pair of Disc Rotors Y18709-3.