TMPZ Upgraded Heavy Duty Steel Trailer Hitch Lock for 2-5/16 Inch Couplers – Coupler Lock Secures Safety Chains, Anti-Theft Weatherproof Protection for RV, Boat, Camper & Utility Trailers (Blue)

Protect your investment with confidence. This heavy-duty trailer hitch and coupler lock is engineered from heat-treated armored steel to stand up to the toughest theft attempts. Sledgehammers, crowbars, drills, and even freeze attacks—this lock shrugs them all off.What sets it apart? Unlike standard tongue locks, it secures both the 2-5/16 inch coupler and the safety chains, closing off every point of attack. Whether you leave your RV at a campsite, your boat trailer at the marina, or your cargo hauler on the job site, you’ll know it’s guarded by double-layer security.The patented disc-style core locks with a single push—no loose pins or complicated steps. A rust-resistant finish and fully enclosed cylinder keep it reliable through rain, snow, salt, and dust, giving you year-round protection with minimal upkeep.Note: Designed for standard 2-5/16 inch couplers. Please confirm your coupler size before purchase to ensure the correct fit and maximum protection.

• 【Locks Coupler & Safety Chains Together】Unlike standard trailer tongue locks, this model clamps down on both the coupler and the safety chains. Double-layer security means peace of mind—whether your trailer’s parked at the job site, storage yard, or a remote campsite
• 【Heavy-Duty Steel, Built to Stop Thieves】Forged from heat-treated armored steel, this trailer coupler lock is made for serious protection. It shrugs off sledgehammers, crowbars, drills, and freeze attacks—exactly the kind of brute force criminals use. Whether guarding an RV, boat trailer, or work rig, you need a lock tougher than the thief
• 【Quick One-Click Locking】No pins, no twisting—just push to lock and walk away. The patented disc-style core is drill-resistant and pick-proof, making this puck lock for trailers fast, secure, and easy to use. Perfect for roadside stops or long-term storage
• 【Weatherproof, All-Season Reliability】Rain, snow, salt, and dust—this lock keeps working year-round. A rust-resistant finish and enclosed core mean less maintenance and more confidence, whether you’re by the coast, on the farm, or hauling through winter roads
• 【For Heavy-Duty 2-5/16" Trailers】Made for standard 2-5/16 inch couplers, this heavy-duty hitch lock secures RVs, campers, boat trailers, cargo, horse, and dump trailers. Please confirm your coupler size before purchase to ensure the correct fit and reliable protection