Designed to fit under the Yamaha Grizzly 550/700 front and rear rack mounts. Provides a tapped M8 X 1.25 Heli-Coil thread for each of the rack mount holes for any mounting application. Eliminates the need and hassle of lost underside nuts and washers. Mil-Spec hard black anodized for wear resistance. For models 2007-20XX.