Our single-mount chains has a cam design and meets the Class U & W from SAE traction device standards. Product Features:TIRE SIZE: 215/70-17.5, 215/80-16, 215/85-16, 225/70-16, 225/70-17, 225/75-16, 225/75-17, 235/55-19, 235/70-17, 235/75-15, 235/75-16, 235/80-16, 255/55-17, 285/70-15, 8.75-16.5SAE Class U & WCam StyleSingle Mount
