One size fits most coupler types;Dual ratchet lock System;Exclusive design provides 360 degrees of hardened steel protection;Key hole cover keeps out dirt;Attractive Ballistic grade Nylon housing;One size fits all (from 1-7/8, 2, to 2-5/15, all coupler types);Key hole cover slides up to seal out dirt and grime;Attractive ballistic grade nylon housing absorbs hammer blows and protects against weather;Type 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 break.;Weighs 6 pounds

• Trimax UMAX100 Premium Universal 'Solid Hardened Steel' Trailer Lock (fits all couplers)
• Steel

Trimax UMAX100 Premium Universal 'Solid Hardened Steel' Trailer Lock (fits all couplers)Trimax