Features: Dual bearings design, center bore in the center, easy and accurate to find the position. Multi-purpose, 3-in-one design, forward and reverse rotation direction adjustable, and with trigger lock function, disassembly and installation easily. Multifunction, can be used as impact drill(punching on the wall, ground), flat drill(drill holes on the metal, PVC, plastics, wood) and screw screwing tool. Self-locked collet, 25 + 3 stage settings, delivers 25 torsion settings and 3 working modes, can satisfied with all your demands. There are two kinds of speed control modes, 2 gears adjustment and stepless speed adjustment for you get the speed you want. Built in LED working light, provides illumination in dark spaces as you work. Ergonomic anti-slip handle design, easy to grip and with comfortable hand feeling, practical and labor-saving. Reserved several ventilation cooling holes, efficient heat dissipation, will not hot for working long time. Full metal gear and bearings are manufactured suing the high carbon hardness steel and quenching heat hardening process for maximum accuracy and stability. Comes with large capacity battery, overcurrent, overvoltage, charge, discharge, and over temperature are protected.