The Saracen Winterhoff is designed specifically to fit BPW Winterhoff caravan and trailer hitches including the WS3000. It is a perfect fit for the hitch. Some generic hitch locks may leave a lot of space around the hitch, causing rattling, and leaving them far less secure and vulnerable to crowbar attacks. The Saracen Winterhoff comes complete with a free carry case and security hitch ball.