2 in 1 design drills both the through hole and the counterbore for hex bolt and washer installation. Full screw point tip and auger flute design allow for easy through-hole drilling. 5/8": 1-13/16" counterbore to set washer. Ideal for deck building and more. 8" bit length for deep drilling.
Using this product, our team found that it offered excellent results when drilling through tough materials. The hex bolts allowed us to use a variety of tools and the design of the auger made it easy to handle. It proved to BE a reliable tool time and time again during our industrial projects. The only downside was that the price was a bit steep compared to other augers in the market. Overall we highly recommend this product for those in the industrial and scientific fields. .
Pros
Fast and efficient drilling with sharp cutting edges
I like the design. But it doesn't work. He is well built and strong. It's very dangerous! After the hole is drilled and the reaming begins, the tool dives in and the drill you use pops out of your hands. I'm a big guy with a 1/2 corded drill. This can be great when drilling foam board. Please note this is a size 5/8 review. I also have a size 1/2 and it worked fine on the hole I tried it on.