Feature:1. High strength 6061 aluminum alloy, hardness higher than ordinary aluminum alloy, not easy to deform.2. Fine workmanship, CNC forging processing, weight loss, same strength.3. Thicken wear resistant silicone brake skin, 150mm thickness, wear resistant without deformation, easy to replace, strong stability.4. Brake wire conduit, aluminum alloy material, high hardness and not easy deformation, complimentary accessories.5. V brake mounting hole, copper hole wall wear resistant and not easy to rust, installed butter for better effect.6. Rebound adjusting screw according to the weight of the brake habit, adjust the brake rebound force, more humanized designed.Specification:Condition: 100% Brand NewItem Type: Bike V BrakeMaterial: Aluminium AlloyColor: BlackUsage: Long Arm V Brake Suitable 14 Modified 16, 16 Modified 18, 18 Modified 20, 20 Modified 451 Wheel Diameter Using Weight: Approx. 199gArm Length: Approx. 110mm/4.33inchAdjustable Distance: Approx. 45mm/1.77inch.Package List:1 x Pair of Bike V Brake2 x Screw1 x Brake Wire Conduit1 x GlueNote:412 frame changed to 16 inch wheel set without adding extension mount, which can installed directly.