The Steelmax D1 PRO X is an extremely durable, rigorously constructed drilling machine that is purposely designed for longevity. The 440 RPM motor (under load) makes it optimal to use with HSS and TCT annular cutters. Lightweight, compact and portable, this magnetic drill features a powerful 1100-watt motor capable of drilling with annular cutters up to 1-9/16" (40 mm) diameter holes through 2" (50 mm) thick material.