
Worth the money. The product is of good quality and unlike many other cases what you see in the original picture you actually get (except for the shiny layer on the product). The locking screw holds the ring perfectly on the bit and allows you to control the depth you want to drill for each project you are working on. I also used them to hold a wooden ball that I attached to a gooseneck drill. I did this when drilling holes between studs in a wall to connect wires to an existing wall. All in all worth every penny!