Mèche pilote avec dents en carbure, 5/16" x 4"

I’m a rough in plumber that does primarily track houses, drill hundreds of holes a week. These pilot bits are garbage compared to the old spade still bits they use to have. The only positive to them is I’ve never had one break compared to the spade bits that broke often. I would still take the spade bits over these. I spend more time trying to unthread the wood off of the pilot than I do drilling out an entire house. Not impressed, they’re garbage, they’ll make you progressively angry throughout the day, I’m not even working right now and I’m getting angry just thinking about using them again.

This bit is like ramming my fist threw wood. I'm a plumber and drilling holes with this are painstaking everything gets caught and sucks getting out. Only good thing is they are hard to bend or break.