ITEM NAME:8pcs 50mm 1/4 Inch Steel Hex Shank Magnetic Hex Head Screwdriver Bits Tool Product Description Description: Descriptions: Those Hex Head Screwdriver Bits are made of S2 alloy steel which is a commonly used material in hardware with high hardness Magnetic bits are firmly fixed on screwdrivers 8 sizes a set at an inexpensive price can meet your requirements Specifications: Brand: JAPAN SEALS Materials: S2 alloy steel Type of head: hex Type of joint: 6.35mm / 1/4 inch hex Net weight: (approx.) 87g Dimensions: Size    Dia. of head (mm)       Length. (mm) H1.5        1.5 / 0.06"             50 / 2" H2          2 / 0.08"              50 / 2" H2.5     2.5 / 0.1"             50 / 2" H3          3 / 0.12"                     50 / 2" H4          4 / 0.16"                     50 / 2" H5       5 / 0.2"                       50 / 2" H6       6 / 0.24"                     50 / 2" H8          8 / 0.3"                       50 / 2" Included: 1 X H1.5 Magnetic Hex Screwdriver Bit 1 X H2 Magnetic Hex Screwdriver Bit 1 X H2.5 Magnetic Hex Screwdriver Bit 1 X H3 Magnetic Hex Screwdriver Bit 1 X H4 Magnetic Hex Screwdriver Bit 1 X H5 Magnetic Hex Screwdriver Bit 1 X H6 Magnetic Hex Screwdriver Bit 1 X H8 Magnetic Hex Screwdriver Bit.Those Hex Head Screwdriver Bits are made of S2 alloy steel which is a commonly used material in hardware with high hardness. Magnetic bits are firmly fixed on screwdrivers. Included:1 X H1.5 Magnetic Hex Screwdriver Bit.