Feature:1. Double Fulcrum Design: The brake shoes on both sides can be opened at the same time when the double shafts are adjusted to avoid the friction of the brake shoes on the wheel rim, so that it will not tilt, so as to better achieve the braking effect.2. Adjustable Small Screws: Can adjust the distance on both sides when installing, and is very practical.3. Anodic Treatment: The cover has a glossy, good corrosion resistance and rust resistance effect.4. Applicability: Suitable for front brake and rear brake, and suitable for folding car and road car.5. Manufacturing Material: Made of high quality aluminum alloy material, it is durable and sturdy, which undoubtedly extends its service life.Specification:Item Type: Bicycle Side Pull Brake CaliperWeight: Approx.192g / 6.8ozMaterial: Aluminum AlloyCenter Distance: Approx.61-79mm / 2.4-3.1in (Distance From Screw Center To Brake Shoe Or Block)Model Number: For OPC 33,34 Brake Shoes.Package List:1 x Folding Bike V Brake