Specification: Affordable: Bosch Quality at affordable price! Highly Serviceable: Motor has changeable carbon brushes for easy maintenance and serviceability! Durable: Designed with Robust Housing and Battery Cell Protection! Technical Data Battery voltage:18.0 V Torque (soft/hard/max.):21/54/- Nm No-load speed (1st gear / 2nd gear):0 – 500 / 0 – 1,900 rpm Battery type:Lithium-ion Max. impact rate:27,000 bpm Chuck capacity, min./max.:1.5 / 13 mm Torque settings:20+2 Drilling diameter Max. drilling diameter in wood:35 mm Max. drilling diameter in steel:10 mm Max. drilling diameter in masonry:10 mm Screw diameter Max. screw diameter:10 mm Noise/vibration information Sound pressure level:88 dB(A) Sound power level:99 dB(A) Uncertainty K:5 dB