Review on Enhance Accuracy and Efficiency with Uxcell Diameter Center Spotting Countersinks by Kevin Graham

I got tired of my regular drill bits jiggling while I started to drill holes. In some cases the center punch wasn't accurate enough for the positioning, so that was exactly what I needed. Came in a fancy little reusable plastic box that won't fade or lose them. I mainly use them on aluminum alloys in a basic cross-vise drill press, so I can't comment on how they handle harder materials. Delivery was fast, product arrived quickly.