This is a tool holder for HivWic's universal mount at www.thingiverse.com/thing:1234989; It takes a Makita 3709 or anything else that looks like a cylinder with a diameter of 65mm. I designed this to be ... solid :) After printing the fit with the mount will likely be pretty tight, so it will need a bit of sanding/filing and breaking in (I keep an older universal mount print for this, just hammering the mount in and out a bunch of times will erode the high spots and make it slide in reasonably easy.