GDR18V-1400B12 Bosch 18V 1/4” Hex Impact Driver Kit The GDR18V-1400B12 Bosch 18V 1/4” Hex Impact Driver Kit features an ergonomic tool for professional-grade fastening applications, due to a compact design and 1,400 In.-Lbs. of max torque. The GDR18V-1400B12 Bosch 18V 1/4” Hex Impact Driver Kit supplies power transmission designed for medium-duty fastening and drilling applications, with 0-3,600 no-load impacts per minute and 0-2,800 rpm. GDR18V-1400B12 Bosch 18V 1/4” Hex Impact Driver Kit features Bosch’s hammer-and-anvil system, designed to concentrate torque to the tool, not the user. The tool features the well-balanced Compact Impactor design, with a head length of just 5.9 In., a weight of only 2.3 Lbs. (tool only, not including battery) and a soft slim-grip handle. The quick-change 1/4 In. hex drive chuck features a power groove for enhanced bit grip. GDR18V-1400B12 Bosch 18V 1/4” Hex Impact Driver Kit comes with one 18V 2.0 Ah SlimPack battery and an 18V charger.