ITEM NAME:6Pcs Shank 1/4'' S2 Steel 150mm Long Magnetic Hex Cross Head Screwdriver Bit Set 100% brand new and high quality Materials: S2 alloy steel Color: as shown in pic Those Long for Cross Screwdriver Bits are made of S2 alloy steel which is a commonly used material in hardware with high hardness. Magnetic bits can be firmly fixed on screwdrivers. Specifications: Type of Head: for Cross Head Length of Screwdriver: 150mm Type of Shank: Hex Dia. of Shank: 6.35mm / 1/4" Dimensions: Size                PH1    PH1     PH1     PH2     PH2    PH2 Bit Diameter    Î ¦3.0    Î ¦4.0    Î ¦4.5    Î ¦4.5    Î ¦5.0   Î ¦6.0 Length (mm)     150     150      150     150      150     150 Quantity:6Pcs Notes: PH1 is suitable for major and small appliances; PH2 is suitable for household screws and major appliances. Do not turn the screws with unmatched size,in case get both screw and bit damaged. Please allow a bit manual measuring errors. 6PCS Screwdriver Set.Length of Screwdriver: 150mm. 6PCS Screwdriver Set. Those Long for Cross Screwdriver Bits are made of S2 alloy steel which is a commonly used material in hardware with high hardness. Materials: S2 alloy steel.