Factory Spec severe duty brake pads are made of a sintered bronze compound. Their exclusive high-density mix extends pad life for use in extreme conditions such as sand, mud, water and farm usage. If long life is your main concern, these brake pads are your best choice. They will last much longer than any semi-metallic or organic brake pad on the market. 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 sintered metal brake pads fit the following models 2000 Polaris Sportsman 500 6x6 2001 Polaris Sportsman 500 6x6 2002 Polaris Sportsman 500 6x6 2003 Polaris Sportsman 500 6x6 2004 Polaris Sportsman 500 6x6 2005 Polaris Sportsman 500 6x6 2006 Polaris Sportsman 500 6x6 2007 Polaris Sportsman 500 6x6 2008 Polaris Sportsman 500 6x6