The ultimate screw-driving tools for the pro who needs corded power and speed in drywall applications. The SENCO DuraSpin DS200-S4 collated screw system comes conveniently assembled to a rugged 4,000 rpm screwdriver, and is capable of driving drywall screws ranging from 1in. 2in. in length. The DS200-S4 comes complete with the DuraSpin collated screw feed system, mounted on a SENCO screwdriver, in a rugged carrying case, and with two spare bits.