Compact, lightweight and durableSilent final brake powerMore copper granules, better heat dissipationPerfect spray surface treatment mass than other normal disc brake padsBicycle parts of fine size, very convenient to use without any difficulties.Name: metal disc brake padsSuitble for: SRAM Guide //R Avid XO E7 E9 Trail 4 Pistionssize:37.4 x 25mmMaterial:Copper basecolour:goldPackage Contents:4 Pair x Bike Brake PadsOnly 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.cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.