SCM Approved caravan and trailer hitch lock. Designed and built specifically for use with Winterhoff hitches, including the WS3000 stabilising hitch. The Saracen Winterhoff is a high-security caravan/trailer hitch lock. Manufactured by Fullstop Security, using their special blend of composite metals which are designed to be resistant to cutting, drilling and gas freezing. The Saracen Winterhoff comes complete with a free carry case and security hitch ball.