With the Trimax TCL75 wheel lock you can rest easier knowing you have a top name wheel lock on your trailer. This wheel lock fits most wheel 12" to 16" (Even fits the stubby 8" snowmobile tires). The exclusive dual action design serves as both a lock and a wheel chock to help prevent trailer roll away. The TCL75 wheel lock adjusts from as small as 7" width to 11..25" width. The arms are rubber coated to help protect your wheel finish. Made of heavy gauge rugged powder coated steel. This wheel lock has a high pick resistant mechanism and includes a lock dust cover to help keep out dirt and grime. The lock comes with 3 keys for convenience.