Quik Drive WSNTLG212S Deck and Dock 212-Inch Screws with N2000 Corrosion Protection Twin Threads for Faster Driving N2000 Mechanically Galvanized Corrosion Protection Nibs under head for countersinking Used in Quik Drive Tools PRO250, PRO300S, 2000 SDS. Free Bit in every box of screws #3 Undersized square drive BIT3SU