"A very sharp and strong bit. Used it to drill out a seized steel bolt. It chewed through it no problem although by the end of it it did become blunt but this was expected. Other standard bits just blunted and glowed red after a millimetre or two.
Given the price, I was happy with it and am considering replacing all my bits with this range."
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Review 2 for DeWalt 4mm Extreme 2 HSS Drill Bit Pack of 2
"This drill bit is vicious. You dont push the drill into the wood, you hang onto it because it drives itself in. On the face of it this should be excellent but I found it kept falling out of the chuck as a result of me having to exert a pulling force on it as opposed to pushing it."