Drywall Screwdriver DeWALT DCF620D2K-QW Technical specifications: power supply — battery; voltage — 18 V; brushless motor; hex chuck — 6.35 mm; speed — up to 4400 rpm; torque — up to 30 Nm; 2 × 2.0 Ah Li-Ion batteries; charger; TSTAK case; weight — 1.88 kg.