Twist drill bits. Especially in steel thicker than ¼ ... “Annular cutters are actually designed specifically for use with magnetic drills with automatic lubrication,” Carroll says.

If you're in the market for new drill bits for your next home improvement project, check out these products from Harbor Freights that have great reviews.

Their magnetic vise, designed for a drill press but probably a great choice for securing work to a milling machine, grinder, or even a CNC router, has a simple but sturdy steel frame. Two separate ...