This Dewalt Power Bit is the ideal tool for fastening screws in hard to reach places. It features a hex shank that fits into power drills and drivers. The hex shank of this power bit allows it to fit into standard 1/4" hex drives. Made of S2 steel, the bit has a Torx T20 point size and an overall length of 2 in. The magnesium phosphate finish offers added protection against corrosion. This screwdriver bit has a fastening tool tip size of T20 and measures 2" in length. You will want to have this Dewalt Power Bit around when you need to drive screws quickly and easily without having to carry around your cordless drill or driver.