The TyRex DCF5000 is part of the TyRex line of collated screw systems. Designed primarily for the commercial construction market, applications of the TyRex DCF5000 include drywall to wood, drywall to steel, sheathing, underlayment, cement board and fencing. These units include a patented retractable corner-fit nose, ideal for drywall and window installations, as well as a patented clutch design that eliminates bit wear and fastener overdriving by disengaging when a screw is sufficiently set.