The GSB 16 RE Professional is the fastest tool in its class.It has a 750 W for the fastest work progress.Compact design for perfect handling.Sturdy metal gear housing for long lifetime.Single-sleeve keyless chuck with Auto-Lock for fast tool changes with one hand.Speed preselection with setting wheel for working in various materials.The maximum Drilling in concrete 16 mm, in wood 30 mm, in steel 13 mm and in masonry 16 mm.