MEGAPRO 9BP-TP-2B Star Double Ended Bit Set, 2 In, PK 2. More details: Screwdriver Replacement Bit Set, Number of Pieces 2, Shank Size (In.) 1/4, Material S2 Steel, Application For Use in Driving Screws and Other Fasteners by Hand Tool Application, Includes Hex: 1/8 and 9/64, 5/32 and 3/16, Package Quantity 2