nsurance approved SAS Wheel clamp for your trailer or Caravan with Steel wheels Wheel clamp to fit 10″ steel flotation tyres with deep inset central dished rims, and 165mm-215mm wide tyres. Will cover wheel nuts up to 25mm. One-piece wheel clamp that covers a wheel nut, wraps around the wheel and locks securely in seconds. This wheel clamp boasts of a high security steel encased lock and twin locking mechanism for maximum security. This SAS wheel clamp weighs under 5kg, making it ideal for touring, yet very secure for long term storage as well. Compact design makes it easy to store when not in use. Painted bright red for maximum visual deterrent and to put thieves off on sight.