Extremely versatile auto-feed attachment for professionals driving a variety of screws in high-speed applications. Drives screws from 1 to 3 in length at 4000 rpm. The high-speed motor is ideal for high-speed applications like subfloor, underlayment and drywall. The kit comes complete with our SG4100 screwgun, industrial-grade DS320 attachment, extension pole with secondary handle, spare drive bits and a storage bag.