ITEM NAME:6Pcs Shank 1/4 inch S2 Steel 150mm Long Magnetic Hex Cross Head Screwdriver E3Y4 6Pcs Shank 1/4 inch S2 Steel 150mm Long Magnetic Hex Cross Head Screwdriver E3Y4 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. Materials: S2 alloy steel Type of Head: for Cross Head Length of Screwdriver: 150mm Type of Shank: Hex Dia. of Shank: 6.35mm / 1/4 inch Size: PH1 PH1 PH1 PH2 PH2 PH2 Corresponding diameter: Dia. 3.0; Dia. 4.0; Dia. 4.5; Dia. 4.5; Dia. 5.0; Dia. 6.0 Color:Gray Quantity: 6 Pcs 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. Package include: 6 x Screwdriver Set Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.