One thing about Hayes is, they make durable goods. These pads are still in demand because the brakes they are used with are still running great. Back when, Hayes was one of the Go-To disc brakes and sold tons of them - and they still need pads.
Use these with the Hayes Mag, Hayes 9 and Hayes MX1 disc brakes. Each package contains two pads so order two sets for one bike. The Sintered-Metallic pads provide long wear and consistent wear in wet and muddy terrain.