Package: 2 pairs (4 pads + 2 springs) The full length of this metal brake pad is 1.378inches and the full width is 1.22inches. It is small, light, safe and stable. It is suitable for our V3 model, and also suitable for brake pad replacement of other electric bicycles of similar material, size and function. Among them, the metal copper-based pads are more wear-resistant, high-temperature resistant, and heat-dissipating than resin and asbestos pads, and the metal pads can provide better braking in a long-term braking environment. Effect, low wear, comfortable, stable and durable, modulation function is fast and agile. Copper metal sheet for maximum initial bite force, short break-in period and low noise. Not only suitable for riding on flat terrain, off-road and commuting, but also in complex terrain environments, such as muddy roads, mountain roads, beaches, deserts and other roads, our brake pads also have excellent braking performance for your riding safety And the comfort experience is escorted.