Trimax Dual Force Clamp Style Trailer Lock Style 2 TRIMAX makes the worlds toughest locks. Through value added engineering design, TRIMAX is committed to product innovation that holds up to the highest quality standards. TRIMAX provides maximum security for marine, trailer and tow, RV, performance truck, power sports and bicycle applications. Tested. Tough. Weight: 3.5000 Compatibility: 1-7/8 Inch/ 2 Inch/ 2-5/16 Inch Couplers Style: Hitch Ball And Clamp Pin Size (IN): 4-1/2 Inch Color: Black And Gray Material: Cast Alloy Quantity: Single Features:Key Hole Cover Slides Up To Seal Out Dirt And GrimeType A Key Which Is A Spring Loaded, 7 Pin, High Security Key. Resists Attempted Drill Outs. Rugged And Durable, The Key Will Not Bend Or BreakHuge 6 Tooth, 3/8 Inch Dual Ratchet Locking SystemHardened 5/8 Inch 16 Millimeter Steel ShackleEasy To InstallLimited Lifetime Warranty