Semi-metallic disc brake pads for Avid a durable working life thanks to Copper/Ceramic Alloy. Advanced abrasion-resistance material formountain bike disc brake pads to minimize noise, vibration, harshness. Semi-metallic bike brake pads for Avid have Perfect hydraulic disc brake performance in high temperature. and wet conditions. mountain bike disc brake pads' offers predictable and stopping power. size:29.7 x 21.2mm Material:Sintered material colour: gold Package Contents: 1 Pair x Bike Brake Pads Only the above package content, other products are not included. Note: Light 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.