Almost any general-purpose twist bit will do a decent job of drilling holes in metal. In fact, most drill bits labeled specifically for metal are manufactured to drill through various materials, ...

When plumbers and electricians need to drill a large hole in framing lumber or other material—to make way for pipes and wiring—they usually opt for a self-feed bit (above). Such bits max out at a ...

Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? The Takeaway: Diablo’s Impact Strong Step Drill Bits are a fast, convenient way to ...