METAL HYDRAULIA DISC BRAKE PADSAll the DISC BRAKE PADS we sell are quality guaranteedEOOZLove Life, Love CyclingMaterial > Multi Metal Powder > Kevlar Fiber: for heat-resistant and strong synthetic > Resin: made by combining chemicals in a laboratory to stimulate a reaction which results in the formulation of a resinous compound > Copper BasePerformance > Tested by TUV Rheinland with EU Standard EN14766:2005 > Compact, lightweight and durable > Ultimate brake power without noise > For high intensity cycling environment , best dissipation > At least two times life than RESIN disc brake pads