Heavy Duty Key Alike 1-7/8" 2" 2-5/16 Cast Steel Universal Coupler Lock Trailer Hitch Lock KEY ALIKE each lock come with 3 keys Heavy Duty Cast Steel Universal Coupler Lock Fits Hitch Sizes 1-7/8", 2", And 2-5/16" Lock Mechanism Resists Picking And Prying Weather & Rust Resistant