All Vesrah shoes and pads are sold in pairs. Vesrah brake shoes and pads are manufactured to meet or exceed OEM specifications. Standard pads/green pads are manufactured with organic material which contains Kevlar® and no asbestos. Sintered metal pads contain copper, tin, graphite and other metallic elements. This provides quick breaking power in wet conditions and, at high temperatures, will not soften or vaporize. RJ hi-performance racing pad gives you powerful braking at the race track and is used by Vesrah Suzuki Racing Team in the USA. Mark Junge, chief rider for Vesrah Suzuki Racing Team recommends you to try and test RJ brake pads at your next race. Standard Series: Non-asbestos, aramid and mineral fiber composed, exceeds O.E.M. requirements. R Series: Groove Cut, groove cut, hi-performance. J Series: Metallic sintered metal, improved durability. SQ Series: Non-asbestos, aramid and mineral fiber composed, groove cut, long life. RJ Series: Hi-performance sintered metal pad.