3/16英吋短柄鈷M42鑽頭，短鑽長度，機械螺絲鑽頭，美國製造

These cut through hardened steel like butter compared to the cheap bits I've been burning through. The stubby 2-1/4" length is perfect for drilling out broken bolts in tight engine bays where a full-size bit won't fit. Ten bits for this price is a steal.

Bought these for tight spots under the hood where a full-length bit won't fit, and the cobalt M42 tips have held an edge through a dozen holes in mild steel without wandering. Ten bits in the pack means I'm not babying the one good drill anymore.

The stubby 2-1/4" length is perfect for tight spots where a regular bit won't fit, like drilling between a wall stud and a fixture. Cobalt M42 holds an edge way longer than the cheap bits I used to burn through. Ten of them for this price feels like a steal.