The Senco DS202-14V screw system is designed for a wide variety of screw fastening applications,from Drywall to wood,Drywall to steel,interior wood to wood,Exterior wood to wood with screws from 1″-2″.It featurs a powerfull 2,300 RPM high-torque motor with reverse switch to back out driven screws. It’s easy depth of drive adjustment regulates the precise amount of countersink.With a one hour charger and a back up battery ensuring a full charge.With 50 screws capacity in each strip this will speed up your production time.