Davis has added some new designs inside the same but is going to have some annular finned heads too. these are only in the pilot stage now hope the pix loads martin

sorry guys will have to fiqure out the load pix problem quite nice the locking allen set screw on these is strainght accross not angled
same set up for locker allen as the irvine 40 diesel
the trial head for a older OS25 sitting on a Royal clone
maybe I can get him to post a pix if I cannot get it turns out its an adobe pdf file and cannot move it to my pix file best bet is go to the Davis site to get a look