🔩 High-performance 4-Pack Cobalt Drill Bits by TopLine Review

Quality and productivity make my job easier when creating lift controls for suspended ceilings. I buy them to make my job easier. For a few bucks, a good sharp drill bit makes a world of difference.

Appears to be of good quality. Nicely finished and quite edgy to begin with. Haven't had a chance to try them on harder materials yet but I'm sure they will do the job. Nice quality bits.

These drills should be made from M42 Cobalt High Speed Steel. I was drilling in cast iron with a #7 drill bit for a 1/4-20 screw and the drill bit hooked and twisted, twisted. I've had drill bits that break, snap or just wear out, but never one has turned like a piece of liquorice!