Item Descriptions:-[Compatibility]:Bicycle disc brake pads compatible with Jak-5 B777,TRINX.-[Material]: Disc brake pads made of semi-metallic and hard-wearing resin compound-good braking power and durability.Medium hardness and better heat dissipation, long lasting performance.-[Low noise]: Bike brake pads are used on the front or rear brake. The resin pads are low-noise and the focus is on good controllability of the braking force.-[Copper semi-metal]: Brake pads contains copper fiber, to increase heat dissipation and wear resistance, break-in time, braking response is direct, sensitive, longer lifeeffectively protect the brake disc.-[Note]:Please compare size and shape with your original brake disc before purchase.Please check and replace brake pads regularly.Package:2 Pairs Brake PadsItem Specifications:Colour:BlackMaterial:Semi-metallic,ResinSize:28.5x22.5mmThickness:4mmBrake Type:Disc Brakes