Here is a weld-on Tube for use in making your own engine stand adapters. These are the tubes we use in our fabricated Engine Stand Adapters, just unwelded and on their own. Outside diameter is 2.375" and they fit into most (but not ALL, so check your engine stand first!) engine stands. They have anti-rotation pin holes every 45 degrees, and holes at the end for your turning handle. Bare steel tube only, cnc laser cut. Let your imagination run wild!