Amazingly smooth drill bit. I had a cabinet hardware installation on white painted MDF that was flush with the cabinet door and the tie rod covered the 4mm mounting screw diameter by less than 1/2mm. I warned my client that there would likely be chipping from the 80+ holes to be drilled (and we didn't have touch up paint). I'm happy to report that there were no chips and the drill bit cut the last hole just as accurately as the first. I was impressed to say the least. The cost fully justified the results achieved. I bought an extra one in case the bit dulled but it never came out of the case. BTW, the Beats come in a nice reusable plastic tube to keep them in good condition while they wait for their next job.
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