The 8 Best Drill Bits of 2021 - The Spruce
2021-7-25 · Best M42 Drill Bits—STROTON Metal Drill Bits. For a Cobalt coating with a higher concentration, look to these STROTON drill bits, which fall under the category of M42 bits and have an 8% coating. This set comes with 19 straight shank pieces that give you the ability to drill holes through a wide range of metal objects.
Get Price