Bicycle Brake Adapter High Sensitivity Rust-proof Accessory Brake Caliper Bracket Converter for Bicycle Description: Definitely, our product can be used for a long time because it has high hardness and excellent corrosive resistance. Using all-aluminum alloy forging and one-piece tech, it has high hardness and strong stability. At the same time, it adopts a curved design and has strong anti-skid ability. It is made from aluminum alloy and iron, is durable to use. The length of the product is 12 cm, the width is 5.1 cm and the thickness is 4.4 cm. Our product is suitable for mountain bike. Item Name: Bicycle Brake Adapter Material: Iron,Aluminum Alloy Features: Wear Resistance, Perfectly Fitment, Universal Color: Black, Red, Gold, Silver Purpose: Convert the old road bike V brakes into disc brakes. Size Details: 12cm x 5.1cm x 4.4cm/4.72" x 2.01" x 1.73" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Before buying, please confirm the position of the rear hook of your frame, whether the size of the triangle area of the plane is similar to the size in the picture, if the difference is far, please do not buy, so as not to install it. Package Includes: 1 x Bicycle Brake Adapter