You are purchasing a New GSRF, Loc-it coupler lock for a 2 5/16 ball coupler. This will fit stamped couplers only, not forged couplers. As you can see, this body of the coupler lock is 1/4" thick on the housing. This comes with a puck lock with 2 keys as shown. This is a very secure way of locking the coupler on the trailer so thieves have no way to tow your trailer away. This does not fit Slide Lock Couplers !! This lock comes with Free Shipping to the lower 48 states. A 90 day Factory Warranty included. Made in good old USA. Color may change. Does Not Fit UFP Atwood Couplers !! Channel, stand, and coupler are for display ONLY, the sale does not include these mentioned. If returned, buyer pays return shipping fees. Please check out our other listings for coupler locks if you have not seen what you want in " See other Items". Note: Coupler must be a total width of 4" or less to fit housing. No International Shipping Please.