Features: These bits are magnetic, which can be fixed securely on screwdrivers by fastening electric screwdrivers, handheld screwdrivers, electric drills, air drills and so on. Hex Screwdrivers are made of S2 alloy steel, which is commonly used in high hardness equipment. The magnetic bits are firmly fixed on the screwdrivers. Specification: Material: S2 Alloy Steel Bit Type: Five-Star Shank Type: 1/4 Hex Shank Size: T10 / T15 / T20 / T25 / T27 / T30 / T40 (50x6.35mm/1.97x0.25in) Color: Silver Quantity: 7pcs/setNote: No retail package. Please allow 0-1cm error due to manual measurement. Pls make sure you don't mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package Included:1 x T101 Star Shaped Magnetic Screwdriver x T151 Star Shaped Magnetic Screwdriver X T201 Star Shaped Magnetic Screwdriver X T251 Star Shaped Magnetic Screwdriver X T271 Star Shaped Magnetic Screwdriver X T301 Star Shaped Magnetic Screwdriver X T40 Star Shaped Magnetic Screwdriver