Voltage: 20V Fastener length range: 19 - 40 mm(  3/4 ''-1-5/8'') Applications:  Fastening cables and conduits to concrete C60 and steel 6mm (max. nail length 27mm) Brushless motor Include: 1000 Pcs nails (27mm) 1pcs air nozzle 1pcs pin  2 Pcs 20V 4.0AH battery(TFBLI20021) 1 Pcs charger(TFCLI20411) Charge volts: 220-240V~50/60Hz  Packed by carrying case