Review on 🔍 Big Horn 19139 5mm Self Centering: Precision and Efficiency Combined by Jonathan Jensen

I ordered this to make holes for shelf brackets in a bookshelf. I figured it would be better than gluing the drill bit to indicate the correct depth. I think the product is a good idea and I like that the drill has a tip that makes working with the hole much easier. The downside, at least with what I got, was that the assembly didn't rotate. True, although I've tried several times. When I drilled a few test holes I found that they were oversized due to construction delays. I like how the assembly is designed with a spring and the correct depth for the 5mm bolt. Unfortunately the instrument was shaky, otherwise it would have been perfect.