Draw-Tite Receiver Lock 5/8" f/3" Square Class V Receivers Sleeved to 3/4 Dogbone Style [63259]Receiver Lock 5 8" for 3" Square Class V Receivers Sleeved to 3 4' Dogbone Style The Draw Tite 5 8 In. diameter dogbone lock is primarily designed for towing for securing class V towing ball mounts that have a 3 In. sized receiver tube. Features: For use with 3 In. square shanks Class V Bright zinc finish 4 In. span Traditional flat key Always write down your key number Sleeve to 3 4 inch WARNING: This product can expose you to chemicals including