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I ordered on the basis the drill bits are suitable for drilling stainless steel and they looked good but failed to the extent I could only drill one hole with each bit before either going blunt or snapping in half. I must stress I have only tried the 5mm and 6 mm sized bits thus far but not really ready to risk any more work with the other sizes.
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If you want cheap maybe use once only then buy these, not cobalt, maybe hss at a push. Bought only for the quantity involved to get me through an urgent job. Numerous bits bent in half, nearly all blunted, one unwound itself in reverse which should never happen
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These drill bits are an absolute waste of money, they definitely are not cobalt drill bits but I suppose for the price they wasn't going to be .I tried to drill a piece of stainless steel with these and it was instantly blunted, they said they would refund the money but haven't. Only buy if you want to drill something soft, like butter
Verified purchase: Yes | Condition: New
Not very good not worth buying if want to use on stainless steel
Verified purchase: Yes | Condition: New
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