• For Pozidriv head screws with thread drive • For optimized use in stationary screw system • K19PZD-2NF: Screw thread 10/32” UNF • K19PZD-2M5: Screw thread M5 • DUOFAST automatic screwdriver, on BOSCH, FEIN and MAKITA screwdrivers or HOLZ-HER magazine screwdriver • High performance alloy steel • Steel-grey, greased finish • Packed individually in a plastic bag