Description of Makita 711492 Speed Steel 2 Inch: Efficient Cutting Tool for Precision Tasks
Drills perfectly round holes in materials such as steel, brass, plastic and wood. Ideal for knockouts in electrical junction boxes and cabinets. Efficiently enlarges and deburs holes. General purpose.
I installed a special drinking water tap (e.g. filtered) which required drilling a 1" hole in my sink. it didn't bite I used cutting lubricant to protect the bit and it's probably recommended to do so.
I needed these to drill through the plexiglass on the top of a wooden slot machine. I actually did it on the car. No splinters on the plexiglass. You really have to step back to remove part of the tree as you go through it, but it did exactly what I needed. Expensive but worth it.