Factory Spec semi-metallic brake pads work well in all conditions and have a high resistance to heat and other elements. These brakes are suitable for general or utility use. Manufactured by Factory Spec Included is two sets of brake pads, as pictured This is enough to replace the pads on the front calipers Made in China These semi-metallic brake pads fit the following models: 2006 Yamaha Wolverine 450 4x4 (YFM450FX) 2007 Yamaha Wolverine 450 4x4 (YFM450FX) 2008 Yamaha Wolverine 450 4x4 (YFM450FX) 2009 Yamaha Wolverine 450 4x4 (YFM450FX) 2010 Yamaha Wolverine 450 4x4 (YFM450FX)