Almost five stars and maybe in time it will prove worthy. A bit stiff for this little hex but seems to do the job well and stay in place with a little extra effort. Drag the marker toward the drill chuck, otherwise you may erase it. Attention, a large area can quickly damage the work material, at the same time it is a visual aid when drilling squares. I really want the bearing to work with the work material, possibly a low friction nylon strap. I think the seller should offer two packs at a…