BulletProof Hitches Loop (Lunette Ring) Attachment Model LOOPBulletProof Hitches Loop (Lunette Ring) Attachment Model LOOP The BulletProof Loop Attachment can be used as a coupler for a trailer, or to attach ropes, chains for recovery demolition. It is even popular for sled pulling! Rated for a max towing capacity of 24,000 pounds and has a vertical weight rating of 3,500 pounds. It works with any of steel Medium, Heavy or Extreme Duty BulletProof Hitches. Works with any steel Medium, Heavy or Extreme Duty