This 13mm thick Heavy Duty cloth covered chromoly hex chain is ideal for securing your trailer or caravan to a ground anchor when in long or short term storage or overnight. The Hex Chain boasts of being Thatcham Approved (independent automotive testing body for vehicle security products), giving you peace of mind when your trailer is secured against theft. The cloth chain cover makes it easier to handle when fitting in cold weather and also provides a scratch proof covering against your ground anchor or docking station it is secured to.