This REESE Towpower barrel style (Dog bone), receiver lock with sleeve is designed to secure both 5/8-in and 1/2-in receivers. It includes a push button lock mechanism which makes it easy to secure; and, a durable rubber cap that keeps dirt out.
Lock Style: Barrel
Class: I/II, III/IV
Pin Hole Size: 5/8 In. & 1/2 In.
Key Design: Tubular
Material: Chrome-Plated
WARNING: This product can expose you to chemicals including Chromium which is known to the State of California to cause cancer birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov. - Chromium (hexavalent compounds)