The Hex Head Screwdriver Bits are made from S2 alloy steel, which is a commonly used material in high hardness hardwareStrong magnetic, fine workmanship, high precision. each edge can be closed exactly screws, no damage to the screw and the screwdriver headMagnetic driver makes it easy to fix bit and pull out screws, can suck the screw in the vertical or tilted sideThe Unique Slide Driver is ergonomically shaped bi-material handle for excellent comfort. It is also convenient to hold for long-term useThese bits fit for electric screwdriver, hand screwdriver, electric drill, drill and so onType of head: or type: 1 or 4 inch hexColour: silverMaterial: S2 alloy steelSize: 75mm lengthPackage Contents:1 x 2.5 x PH0 screwdriver bit1 x 2.5 x PH1 screwdriver bit1 x 4.0 x PH1 screwdriver bit1 x 4.5 x PH1 screwdriver bit1 x 4.0 x PH2 screwdriver bit1 x 4.5 x PH2 screwdriver bit1 x 5.0 x PH2 screwdriver bit1 x 6.0 x PH2 screwdriver bitNOTES:PH0 is suitable for small equipment and precision equipmentPH1 is suitable for and small devicesPH2 is suitable for household screws and appliances.Do not turn the screws unsurpassed size in case you have screw and something damaged.Only the above package content, other products are not included.Note: Light 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.