COUPLER LOCK (SEA-DOG LINE) 1-11/16" 1-13/16" 3/4" 9/16"

Designed for theft deterrence, and to add an additional level of security preventing accidental uncoupling while in transit to better protect your trailer. Two-piece design for better access in hard to reach places. Fits most coupler sizes. Includes two keys. Corrosion resistant brass plated zinc construction.