4 Pairs Avid BB5 Disc Brake Pads and Springs,DiscoBrakes Semi Metallic BB 5 BB-5 Brand: DiscoBrakes Semi-metallic Medium Density Pads including Spring(s) Compatible with Avid 4 Pairs of Disc Brake Pads (8 pads + 4 springs) Semi-Metallic compound suitable for all weather conditions