Powerful and compact 18 V drive train capable of fixing 3,400 screws per (4.0 Ah) battery charge, even in narrow spaces Compact and lightweight design of 1.6 kg with 4.0 Ah for effortless work and comfortable handling Boschs brushless motor technology with Electronic Motor Protection and motor brake for a long tool lifetime Professional 12V System; compact power; maximum freedom; all rechargeable batteries are compatible with new and existing Bosch Professional tools in the same voltage class Items included: GTB 12V-11 The perfect solution for occasional drywall applications: cost-effective and lightweight with professional performance. Bosch EC motor technology with electronic motor protection (EMP) and motor brake for a long lifetime Compact design and light weight for fatigue-free use 0.9 kg (2.5 Ah) and 207 mm grip circumference, Weight: 2.20462262 Pounds, Manufacturer: Bosch Professional