Blazing fast speed in a compact, well-balanced package provides the ultimate in performance and durability. The DS245-AC is equipped with a variable speed 5000 rpm motor designed for high-volume applications including drywall (into wood or light gauge steel studs), sheathing, cement board and underlayment applications. Senco’s patented corner-fit feed system allows placement of screws into tight places unreachable by other collated screwdrivers.