Polished grade 10.9 stainless steel foot peg bolt kit for your Yamaha 660 Raptor. These American Made metric stainless steel bolts are rated at 170,000psi tensile strength and are stronger than the factory bolts. They have a 12 point flanged head and install with a 12mm 12 point socket. All bolts and washers in the kit have been polished. This kit fits all 660 Raptors.