BOLT-ON TRAILER MOUNT INSTALLATION - Bolts to Square Tube and Channel Iron Trailer Frames Using Included 3/8in Hardware. Trailers Without Pre-Drilled Holes Require a 3/8in Drill Bit. Measure Frame Thickness to Confirm Bolt Fit. FRESHWATER BOAT TRAILER AND JET SKI STRAPS - Powder-Coated Steel Hardware Designed for Freshwater Use. 2in x 43in Strap. 1000lb Working Load Limit and 3000lb Max Break Strength. Not Designed for Saltwater or Coastal Marine Environments. AUTO-RETRACT TIE DOWN STRAPS - Push-Button Release Automatically Winds the Strap Back to the Housing for Tangle-Free Storage. For Freshwater Boat and Jet Ski Trailers. Lubricate Moving Parts Periodically to Maintain Smooth Retraction. AMERICAN OWNED, FAMILY OPERATED - Join the Rhino USA Family and Support a Father/Son Business With the Best USA-Based Customer Support. REAL LIFETIME REPLACEMENT - All Rhino USA Products Come With a Lifetime Replacement. If you Encounter any Issues, We'll Ensure You're 100% Satisfied With a Replacement or Refund.