I recently purchased a Tri-Power 2008 model. I can not figure out the tool post style. It looks like the axa styles but does not have the wedge. The tool is placed in the holder and there is a bolt in the middle of it that attaches it to the toolpost. So instead of sliding on like the axa style, it is bolted on. Can someone tell me what type this is? The tool dimensions are 2" width x 2.75" height.