Trailer Lock, Fits 2-5/16-Inch Cast Ball Couplers, Heavy Duty Hitch Lock With 3 Keys Secures Security Chains, Corrision-Resistant, Anti-Theft RV Trailer Locks For RV, Trailer, Boat

About these items Trailer coupler locks compatible with 1-7/8", 2", and 2-5/16" couplers, including bulldog, cast, flat edge ball, Demco, and Airstream styles. Versatile fit ensures reliable anti-theft security for RVs, boats, and trailers. Crafted from heavy-duty carbon steel with wall thickness up to 0.31" (8 mm), these hitch locks resist crowbars, drills, and prying tools. Weights range from 6.8 lbs to 13.5 lbs, ensuring solid durability and theft deterrence. Rust-resistant powder coating protects the lock body from outdoor exposure. Lock cylinders vary by model, including aluminum alloy, stainless steel, or copper, with dust caps to shield against dampness and extend lifespan. Quick one-handed installation takes less than 30 seconds-place on coupler, lock, and secure. Internal cushion pads enhance stability. Each model includes 3–4 keys, ensuring convenience and peace of mind for daily use. Different models are tailored for specific coupler types: clamp-on design, nesting style, or specialized fits for Airstream and Demco cast head. Suitable for long-term parking, storage lots, or travel stops. Key Differences THS001 fits 2" and 2-5/16" bulldog couplers, weighing 11.9 lbs with 0.24" wall thickness. THS002 fits 2" and 2-5/16" flat edge ball couplers, slightly heavier at 12.6 lbs with 0.31" wall thickness. THS003 fits 1-7/8", 2", and 2-5/16" straight tongue couplers, lightweight at 6.8 lbs, ideal for multi-size compatibility. THS004 fits 2" and 2-5/16" Demco cast couplers, clamp-on style with 0.2" wall thickness and compact design. THS005 fits 2-5/16" cast couplers, weighing 10.1 lbs with 0.24" wall thickness. THS006 fits 2-5/16" cast and bulldog couplers, premium model at 13.5 lbs with stainless steel lock cylinder and 0.3" wall thickness. THS007 fits 2-5/16" Airstream couplers, weighing 10.4 lbs, designed for flanged airflow coupler styles. Specifications THS001 Type: Bulldog Coupler Sizes: 2", 2-5/16" Weight: 11.9 lbs / 5.4 kg Wall Thickness: 0.24" / 6 mm Dimensions: Φ4.53 x 8.86 in THS002 Type: Flat Edge Ball Coupler Sizes: 2", 2-5/16" Weight: 12.6 lbs / 5.7 kg Wall Thickness: 0.31" / 8 mm Dimensions: Φ5.59 x 6.89 in THS003 Type: Flat Edge Ball Coupler Sizes: 1-7/8", 2", 2-5/16" Weight: 6.8 lbs / 3.1 kg Wall Thickness: 0.31" / 8 mm Dimensions: Φ5 x 3.46 in THS004 Type: Demco Cast Air Flow Coupler Sizes: 2", 2-5/16" Weight: 11.5 lbs / 5.2 kg Wall Thickness: 0.2" / 5 mm Dimensions: 5.71 x 4.61 x 8.27 in THS005 Type: Cast Ball Coupler Size: 2-5/16" Weight: 10.1 lbs / 4.6 kg Wall Thickness: 0.24" / 6 mm Dimensions: Φ5.59 x 6.89 in THS006 Type: Cast/Bulldog Coupler Size: 2-5/16" Weight: 13.5 lbs / 6.1 kg Wall Thickness: 0.3" / 7.5 mm Dimensions: 6.69 x 4.53 x 6.69 in THS007 Type: Airstream Flanged Coupler Size: 2-5/16" Weight: 10.4 lbs / 4.7 kg Wall Thickness: 0.24" / 6 mm Dimensions: Φ5.59 x 6.89 in Package Contents THS001 / THS002 1 x Trailer Coupler Lock 2 x Bottom Connectors (2" and 2-5/16") 3 x Keys THS003 1 x Trailer Coupler Lock 4 x Keys THS004 1 x Trailer Coupler Lock 3 x Keys THS005 / THS007 1 x Trailer Coupler Lock 1 x Bottom Connector (2-5/16") 3 x Keys THS006 1 x Trailer Coupler Lock 1 x Locking Ball (2-5/16") 3 x Keys