Different types of drill bits are used for drilling different materials and hole sizes.
See if you can name the type of bit used to drill the following holes.
- 6 mm hole in a piece of timber
- 32 mm hole in a sheet of plywood
- 12 mm hole in a concrete slab.
If you're not familiar with the drill bits used for these purposes, ask your trainer or supervisor to show you examples. You can also look them up on the web.