Compact and lightweight design. All metal gear construction ensures high transmission durability. Single sleeve keyless chuck enables easy bit installation/removal with one hand. Ergonomically designed rubberized soft grip provides more control and comfort. No load speed : Hi : 0-1,400 / Lo : 0-400 Capacity : Steel : 10mm (3/8");Wood : 25mm (1") Max. fastening torque : Hard / Soft : 30 / 15N?m Standard Equipment : (+)(-) bit.