Features:This brake adopts quality materials, sturdy, anti-aging and durable.Brake pads are wear-resistant and tough, the grooves on it can improve braking efficacy to make cycling safer.Easy to install, suitable for road bikes with mechanicalbrake.2pcs per set, one for front wheel, one for the rear.High cost effective repair parts for bike maintenance.Specification:Material: Aluminium alloyColor: Shown as pictureMounting screws center to center of clip distance: 39mm~50mmBrake Pad Length: Approx. 55mm / 2.17inSize: Approx. 10.5 x 10 x 8.5cm / 4.13 x 3.94 x 3.35inWeight: Approx. 386gPackage List:1 x Pair of BrakesNote:Please note that this product is only suitable for road bikes, and make sure you will not mind before ordering.it can be disposed at the center of the braking distance of the edge of said mounting hole between the brake housing 39-50mm the rim. If the distance is too short or too long, it can not be installed. .