Features:* Made of high-quality material, durable and practical to use * Hex screw screwdrivers are made of S2 alloy steel * Which is a commonly used material in high-hardness hardware.* Magnetic bits are firmly fixed on screwdrivers. Specifications:* Materials: S2 alloy steel * Head type: hex* Connector type: 6.35mm / 1/4 inch hex head * Dia size. Head length (mm). (mm)H2.5 2.5 100H3 3 100H4 4 100H5 5 100H6 6 100H8 8 100H10 1.5 100H12 12 100H14 14,100* Quantity: 9Package Contents:9pcs Head ScrewdriversNote:1. The actual colors of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.2. Please allow slight manual measurement deviation for the data.