Mag drills are the tool of choice for steelworkers who need to drill big holes in, um, uncomfortable places, like, say, 20′ up the side of a vertical steel tube. The drill forms its own mount by magnetically gripping the steel (or other ferrous metal) into which it drills. As you might expect, mag drills are also generally larger than their standard counterparts because there’s usually not as much requirement for mounting when drilling smaller holes. What makes Metabo’s mag drill different is that it’s cordless, too, eliminating the need for both mount and wired power.
Not surprisingly, Metabo chose to go with a special 25.2V lithium-ion battery for the job — a job that’s so likely to exhaust the battery quickly that they include a built-in storage compartment to hold a second “back-up” battery. (Read: You probably won’t take this out with just one battery. Ever.) Most of the other drill features come straight from other Metabo tools — as well as most modern li-ion cordless products: overload and stall protection and an electronic lockout. One nice professional touch: the Metabo offers easy external access to the tool’s carbon brushes, rendering them easily user-replaceable.
Besides this you get a permanently-lubricated all-metal gearbox, a 3/4″ tool holder (note that it’s got a pretty big tool mounted in it in the photo) that’ll accept 1/2″ twist drills or a 1-1/4″ x 2″ cutter, and a built-in cooling fluid reservoir. It’s a two-speed drill, both nice and slow for big applications (380 rpm or 680 rpm). The press offers a 6-5/16″ stroke, and the whole thing’s just about 2′ long. Its V-shaped base will clamp to flat surfaces or curved pipe greater than 3-1/2″ in diameter.
Also not surprisingly, this sucker isn’t exactly cheap. Expect to pay around $2,400 for it — which, come to think of it, isn’t really that much cash for the kind of fab shop that’d keep one of these on hand.