Best possible ergonomic handle for drilling/driving applications Battery protection circuit is activated on high battery temperature to protect the battery from damages due to overdischarge, high temperature or overload current. 10mm (3/8") single sleeve keyless drill chuck with click sound to indicate that drill bit is fully locked Single LED job light with pre-glow and afterglow functions No load speed : Hi : 0-1,700 / Lo : 0-450 Capacity : Steel : 10mm (3/8") ; Wood : 21mm (13/16") Max. tightening torque : Hard / Soft : 30 / 14N?m Standard Equipment : Belt clip, Phillips bit