TLDR: Ideal for sheet metal and when you need to drill a variety of hole sizes. It's expensive, though, so if you just need to poke some holes in wood, get shovels. We just remodeled our living room and re-routed a massive amount of AV cabling in the process, so I had some to use. I used to try drilling a hole for the cables with a wide drill and then somehow move it around the edges to make it bigger, or I used a putty knife. but it can be difficult to poke through thick wood and you must beβ¦