Features: Made of S2 steel, with excellent workmanship, high hardness, good durability and quality assurance. Its service life is 2-3 times longer than that of the ordinary batch head, and its working efficiency is obviously improved. The batch head is magnetic and can easily absorb the screw in the installation. Applicable to electric screwdrivers, hand screwdrivers, electric drills, etc. Screwdrivers only, other accessories demo in the picture are not included. Specifications: Material: S2 stainless steel Length: about 100/150mm Color: as pictures shown Quantity: 10pcsNote: 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. Thank you!Package Included:10 x Screwdrivers