Fixture to hold pistons in milling machine so they can be milled or valve pockets flycut, very impressive work! Those look like piston pins in the heim bearings, so that's my guess...
No. The pin is 1 3/4 Dia. that is sticking through the bearing. They are adjustable up and down and lock at that height with the handles. This is being made super heavy duty to use on any size motor including All size diesels.
