The SAS Defender wheel clamp is designed to fit up to 18" steel or alloy wheel rims and 275 tyre size. The 250mm wide red central disc fits over wheel trims and covers wheel nuts. It is also designed to accommodate low wheel arches found on some caravans. The SAS Defender wheel clamp is quick and easy to fit so ideal for touring, perfect for storage too with high security bullet lock. Supplied in a plastic carry case. The SAS Defender is Sold Secure Gold and Insurance Approved.