Shimano Disc Brake Pads with Fins Metal N04C-MF 1 Pair WP-IBPN04CMFA N04C-MF Features Lining Material: Metal Durable and Braking Power Radiator Fins Reduces Fade and Increases Pad Life Pad Shape: Narrow Type N Piston: For 4 Piston Brake Calipers Back Plate: Composite (Alloy Stainless Steel) 1 Pair Package