This is the 1/2 in receiver pin for someone who already has the 5/8 pin and would like to have the 1/2 pin to match. Bolt Strattec lock will fit both no matter what key manufacturer you use - GM, Dodge, Jeep, Ford, etc. If you have a Bolt receiver lock this 1/2 in pin will fit it. I have a few of these so let me know if you want more than one while quantities last. These have never been in a receiver hitch, brand new just out of packaging. I do not ship outside USA and only take Ebay payments. Thanks for looking!