Bought for fun thought why not have some extra tips because they are from Makita they should be good right? Not correct! they are garbage. Don't buy them. I drilled out some aluminum rivets in the patio door. Bits 1/8 and 5/32 broke with little effort. The "bonus" Phillips hex bits are so short that they take up a lot of space. This is terrible for Makita. I use their drill and screwdriver all the time, and I really like them, so I'm at a loss as to how they can eliminate this waste of space. contractor level? No contractor I know would mess with that. More like a workshop or a grandmother's class. Please find something else to spend your $20 on. Note that all the bits are hex quick release style, which isn't a bad thing, but I think they're easier to break.