مجموعة مثاقب BIG 8 سوبر بريميوم كوبالت M42 سيلفر آند ديمينغ

Bought these mostly for the 3/4" and 7/8" sizes to open up knockouts in an electrical panel, and they cut through 16 gauge steel without a single squeal. The M42 cobalt holds an edge way better than the cheap HSS set I burned through last year. Nice to finally have the full fractional range from 9/1

The 1" bit walked through a 3/4" plate of steel on my drill press without chattering once, which I did not expect at this price. Having every fractional size from 9/16 up to 1" in one case means I'm not hunting around mid-project anymore. Cobalt M42 really holds an edge.

The 1" bit went through half-inch steel plate without a single resharpening, which I didn't expect from a set in this price range. Having all eight jumbo sizes from 9/16 up to 1" in one case means I'm not hunting around for the odd size anymore.