Expert quality. li-ion cells have good energy-to-weight ratio with no memory effect, & a slow loss of charge when not in use. spindle lock for easy bit change. variable speed control. 20 position torque control. high torque three speed gearbox. 13mm jacobs keyless chuck. electric brake. overload protection. forward/reverse facility. adjustable side handle. soft grip handle & trigger. led worklight. Supplied complete with: two screwdriver bits, carrying case, 18v 2.4ah li-ion battery pack, 18v 1.7ah ni-cd battery pack & 230v ac universal one hour fast charger with bs 3 pin plug. specification: drilling capacities: mild steel.. . 13mm. wood.. . 38mm. masonry.. . 13mm. maximum torque.. . 41nm. speeds (no load).. . low 0-340r/min. .. . medium 0-600r/min. .. . high 0-1300r/min. blows per minute.. . 17, 000max. chuck capacity.. . 13mm. spindle thread.. . 1/2" x 20unf. weight (ex. battery pack).. . 1.8kg.