DescriptionsThose 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.12 sizes a set at an inexpensive price can meet your requirements.SpecificationsMaterials: S2 alloy steelType of head: Cross / PhillipsType of shank: 6.35mm / 1/4 in. hexNet weight: (approx.) 140gDimensions:Size Bit Dia. Lgth. (mm)PH00 ��1.6 50PH0 ��2.0 50PH0 ��2.5 50PH1 ��3.0 50PH1 ��3.5 50PH1 ��4.0 50PH1 ��4.5 50PH1 ��5.0 50PH2 ��4.0 50PH2 ��4.5 50PH2 ��5.0 50PH2 ��6.0 50FeaturesThose bits fit for electric screwdrivers， hand screwdrivers， electric drills， air drills and so forth. NotesPH00 is suitable for precision apparatuses;PH0 is suitable for small appliances and precision apparatuses;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 included12 x 50mm Phillips Screwdriver Bits