Bosch Daredevil 6 piece spade bit set $9.97
- Amazon.ca, homedepot.ca
https://www.homedepot.ca/product/bosch- ... 1001006801
These are good because:
1. they're sharp and don't dull easily (except nails, see point 3)
2. they have a screw point to pull the bit through wood (which trumps the popular Irwin speedbits)
3. they're cheap enough that when you hit a nail and wreck a bit you won't cry (nails will kill any spade bit; you need a proper auger bit if you are going to hit a lot of nails)
4. they are hex shank so you can use your impact driver for even faster drilling
Sizes: 3/8", 1/2", 5/8", 3/4", 7/8", 1"
Spade bits are not for fine work. They cut fast and rough and the exit hole will be a royal mess. Think holes in studs and joists for wires where appearances don't matter.
And wood cutting only (anything else of similar or softer density would also be ok, but be aware of how rough they drill).
We like them cause they're cheap. We can buy a lot of these for the price of a single good auger bit.