Coupler lock for lever style trailer couplers requiring a 2 span. Locks trailer to hitch ball when in use. Helps prevent attachment of unattended trailer. Pin Diameter: 1/4 Inside Width: 2 Overall Length: 5.625 Double nickel chrome finish lock housing Zinc dichromax pin finish Patented, pickproof screw-and-lock security 5-pin tumbler 2 keys CRS ready Made in USA