Alloy disc brake, durable and useful. With strong braking force. Smooth and stable control. Excellent heat dissipation effect. Easy to install on your bike High Quality Material: Made of premium aluminum alloy, anti corrosive and rustproof, durable lasting, excellent heat dissipation effect Function: one-piece caliper, dual mechanical synchronous brake, internal hexagon adjustment, perfect match with 160mm brake disc. Applicable Scenes: For Rainy days, heavy off-road, long-distance downhill and other scenes, it is a guarantee for you to ride safely in harsh conditions and is suitable for all mountain bikes, off-road vehicles, MTB bicycles. Easy to install and convenient to use, with strong braking force and smooth control. Disc brake F160 / R140: Suitable for the front wheel 160 disk, rear wheel 140 (generally installed front wheel more). Specification: Material: Aluminum alloy. Size: Approx. 8.5 * 5 * 4cm / 3.3 * 2 * 1.6. Package: 1pcs of Bicycle Disc Brake(Other accessories are not included).