i don't know if i'm ordering all the ones I found.
found out they're diamond coated, not diamond plated. basically the bits are $5 each because the diamond dust is glued on, not embedded. they wear out after like 2 holes, and are a pain to work with even on the first one.
I think i'm just going to wait till I need holes drilled for sure, and then order good ones online (they're still about 25% cheaper than in the city).
I just saw the cheap bits, and thought "hey i should get them all, then charge $15 a hole to drill and make some extra cash!" idea didn't really pan out though
