1The product come with large ventilation vents, which can effectively reduce heat, more stable 2Equipped with LED light, not afraid of the dark environment, very practical and convenient 3Adopt soft rubber handle wrapped, comfortable to hold and not slippery, not easy to feel tired for long time using 4The chuck type is a square chuck, with a torsion of 700N.m and disassembly torsion of up to 1000N.m 5Suitable for construction sites, car repairs, scaffolding, mechanical maintenance, screwing Item Type: Impact Driver Input Voltage: 18V Chuck Type: Square chuck Number of Revolutions (RPM): Strong 0-2200 High 0-1900 Medium 0-1200 Low 0-500Impact Number(IPM): Strong 0-2700 High 0-2400 Medium 0-1700 Low 0-1000 Torsion Force: 700N.m Disassembly Torsion: 1000N.m Uses: Construction sites, car repairs, scaffolding, mechanical maintenance, screwing Battery: For B series 18V battery(not included) 1 x Impact Driver 1 x User Manual Use the correct battery to prevent from being unusable or burned out.