Bolt 7025287 Coupler Pin Lock

Opens with your stock ignition key. Fits couplers from 1/2 to 3-3/8" and any size in between. Lock slides back and forth along pin in 1/8" incremental adjustment for ease of use. Weatherproof with automotive grade stainless steel lock shutter keeps out weather and debris. 6-plate tumbler sidebar prevents picking and bumping for a smooth operating lock that Bolt backs with a limited lifetime warranty