The DEWALT PH2 Drywall Screwdriver Bits have a modified Phillips No.2 head. They are made from heat treated steel for hardness and durability. The bits are 152mm in length and have a unique fitment that has been designed for use with the DEWALT Drywall tool DCF6201. They are perfect for screw driving applications into Drywall. DEWALT DT7207 PR2 Drywall Screwdriver Bits PH2 x 152mm Pack of 20.