This is one of the very first products that we did a run of and we took the basic measurements off a Tiffen dovetail and they modified it to make it shorter but what got screwed up with the Panavision holes. So if your one of the people who never see a Panavision camera mount these shorter versions will work fine with all other cameras. I only wanted 2 made but it was one of those things that I had to do a run of 25 minimum. I never anodized these but I am glad to sell them cheap just to get them sold.