ITEM NAME:6 pieces Shank 1/4 inch S2 alloy steel 150mm Long Magnetic Hex Screwdriver Bits Product Description Description: Descriptions: 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: 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" Quantity: 6 Pcs Total Length: 150mm/5.9" Hex Shank Width: 6.5mm/0.26" Shaft Dia: 3mm/0.12",4mm/0.16",4.5mm/0.18",5mm/0.2",6mm/0.24" Included: 1 x 3PH1 Screwdriver Bits 1 x 4PH1 Screwdriver Bits 1 x 4.5PH1 Screwdriver Bits 1 x 4.5PH2 Screwdriver Bits 1 x 5PH2 Screwdriver Bits 1 x 6PH2 Screwdriver Bits.Length of Screwdriver: 150mm. Those Long for Cross Screwdriver Bits are made of S2 alloy steel which is. Materials: S2 alloy steel. Included:1 x 3PH1 Screwdriver Bits. 1 x 4PH1 Screwdriver Bits. 1 x 4.5PH1 Screwdriver Bits.