Master Lock – Adjustable Stainless Steel Trailer Coupler Latch Lock 2847DAT

This adjustable lock protects and guards against tow-away theft. The lock works when the trailer is either connected to the tow vehicle or when the trailer is unattached. The lock prevents the coupler latch from moving, thereforepreventing either the coupler to be removed from the ball, or not allowing a ball to be placed into the coupler.Six locking positions from9/16″ to2-3/4″.