Senco introduced two new integrated tools and three attachments that are capable of driving 3-inch screws. The auto-feed screwdrivers, the DS332-AC and the DS312-18V, feature 2,500 RPM high-torque motors, and a patented-pending corner-fit feed system. Senco says the new screwdrivers dramatically improve screw placement and are designed for high-volume applications such as drywall, sheathing, sub-flooring and decking. The DS332-AC is corded. The new, compact 18-volt Li-ion battery powered unit, DS312-18V, is a lightweight alternative for medium-duty work that reduces onsite cords. The DS312-18V can drive 200 to 700 screws per charge, depending on the screw length and substrate, the company says. Enrichments to the line include a variable speed trigger with lock and reverse options, a locking depth of drive adjustment that regulates the depth needed for flush drives or countersinking screws, a tool-free screw length adjustment (1 inch to 3 inch), and a belt hook. The tools also are ergonomically designed for use with one hand, Senco says. A cushioned second hand grip helps minimize wrist and arm fatigue by minimizing the exertion needed to complete each drive, the company adds.