ITEM NAME:10 Pcs 100mm Magnetic Slotted PH2 Screwdriver Bit S2 Steel 1/4 Hex Shank 1/4".Overall length: 100mm. It made of high-strength S2 alloy steel, very durable. Material: S2 Steel. Type of shank: 6.25mm/ 1/4" hex. 10x Screwdriver Bit Set. Slotted :ÃŽ ¦6,ÃŽ ¦5,ÃŽ ¦4,ÃŽ ¦3. Magnetic bits, in the installation can easily absorb screws.