1. Shell adopts good quality high Metal manufacturing, brake will not deform slightly, brake extremely sensitive. 2. Safe test data, wear resistant life test Greater than 50000 times, braking friction Greater than 2200N, braking temperature resistance Greater than 120, braking low noise designed, safe and eco-friendly. 3. Brake shoe block made of high temperature friction material manufacturing, with nearly 50,000 times of friction experiments, will never produce high temperature fatigue, brake more sensitive. 4. High quality stoving varnish surface treatment, front with fixed position for convenient installation and disassembly. 5. With variable hole cushion, lithium battery electric bike can used. Condition: 100% New Item Type: Electric Bike Rise Brake Model: 100 Type Material:Metal colour:Silver Package Contents: 1 * Electric Bike Rear Wheel Rise Brake Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.