I know the Tourna clamps are 12 mm because I measured them. Don't know what other clamps have 12 mm posts. I think I seen a video showing how to put Xpider bases on a Gamma machine so I assume the Gamma clamps are 12 mm.
I know the Tourna clamps are 12 mm because I measured them. Don't know what other clamps have 12 mm posts. I think I seen a video showing how to put Xpider bases on a Gamma machine so I assume the Gamma clamps are 12 mm.
I have an Alpha Apex, so the 12mm should fit. I've never cared for the Alpha clamps except some of the older ones that Mark Gonzales found and shipped to me.