• Box Style Heavy Duty Gooseneck Coupler Lock: Designed specifically for gooseneck trailers and 5th wheel to gooseneck kits using a demco gooseneck coupler for a 2-5/16" gooseneck ball.
• Works For Demco Gooseneck Coupler for 2-5/16" Ball: Gooseneck Coupler lock kit fits all gooseneck hitches with Demco coupler for 2-5/16" gooseneck ball – fits square or round stems with standard or 9" offset coupler.
• Quick Easy to Install on Gooseneck Coupler: 3-piece locking kit (Includes Base, Slide Attachment & Disc Lock with 2 keys).
• Heavy Duty Box Style Security for Your Gooseneck Trailer: Lock your gooseneck coupler to prevent trailer theft.
• Ultimate Protection for Your Gooseneck Trailer: Heavy duty security and tamper-proof puck lock.
• Set Bolt Lock Not Included But Sold Separately: Get the Gooseneck Stem Set Bolt Lock Kit, part # SH-400GL-ISP-BLK to protect your inner tube and coupler (sold separately).
• Does NOT work with Goosenecks with Bulldog, Wallace Forge, or Shift Lock coupler.
• Only works with Gooseneck hitches with the ez Demco gooseneck coupler.

Protect your gooseneck trailer or 5th wheel to gooseneck kit that has a Demco gooseneck coupler for a 2-5/16" ball with this heavy-duty box style coupler lock. Engineered specifically for the Gooseneck trailers and 5th wheel to gooseneck kits with the Demco gooseneck coupler, this robust lock provides reliable security by preventing unauthorized towing and safeguarding your trailer when not in use.

Constructed from durable 1/4" thick, 7-gauge steel and finished with a corrosion-resistant black powder coat, this lock offers long-lasting performance and a clean, professional appearance. It’s ideal for securing car haulers, horse trailers, and other gooseneck trailers equipped with the Demco Goose Auto Latch system.

Designed for compatibility with all Gooseneck trailers using a Demco gooseneck coupler for a 2-5/16" gooseneck ball, this lock fits both round and square stems, including standard and offset couplers. Whether your trailer is parked or in storage, this high-strength coupler lock provides added peace of mind and protection against theft.

• Does NOT work with Bulldog, Wallace Forge, or Shift Lock couplers
• Only works with Gooseneck hitches with the Demco coupler.

California Residents: Prop 65 Warning