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 1990 Polaris Trail Blazer 250 1991 Polaris Trail Blazer 250 1992 Polaris Trail Blazer 250 1993 Polaris Trail Blazer 250 1994 Polaris Trail Blazer 250 1995 Polaris Trail Blazer 250 1996 Polaris Trail Blazer 250 1997 Polaris Trail Blazer 250 1998 Polaris Trail Blazer 250 1999 Polaris Trail Blazer 250 2000 Polaris Trail Blazer 250 2001 Polaris Trail Blazer 250 2002 Polaris Trail Blazer 250 2003 Polaris Trail Blazer 250 2004 Polaris Trail Blazer 250 2005 Polaris Trail Blazer 250 2006 Polaris Trail Blazer 250