A. A three-piece set of 1/4-inch hex shank magnetic screwdriver bit sockets, with extended lengths of 2 inches, 4 inches, and 6 inches respectively. They are suitable for screws and nuts and can be used with any electric drill and hand-held screwdriver. B. Note: Only the bottom of the hole is magnetic. The hex shank part is non - magnetic and it is only suitable for single - ended hex drills. C. There is a locking mechanism at the interface. It has built - in magnetism and the bit can pop out automatically. D. The 1/4 - inch hex shank can be used to expand various screwdriver bits, drill bits, and batch heads to achieve the conversion of screwdriver bits. E. With built - in magnetism (only at the bottom of the hole), the quick - release function may improve work efficiency. F. The 1/4 - inch hex shank (6.35 mm) has lengths of 60 mm, 100 mm, and 150 mm respectively. G. It is suitable for the adapter of tools such as electric drills, screwdrivers, and batch heads. H. Note: Only the bottom of the hole is magnetic. The hex shank part is non - magnetic. I. The magnetic strength may not be strong enough to hold the screws firmly. J. Specification parameters: - Shank: 1/4 - inch hex shank (6.35 mm) - Length: 60 mm, 100 mm, 150 mm - Color: Black and silver - Material: Stainless steel - Quantity: Three - piece set K. Features: There is a locking mechanism at the interface. It has built - in magnetism and the bit can pop out automatically. L. Characteristics: - Suitable for the adapter of tools such as electric drills, screwdrivers, and batch heads. - Can expand various screwdriver bits to achieve the conversion of screwdriver bits. - With built - in magnetism, the quick - release function may improve work efficiency. - The magnetism can limit the position of the screwdriver and is adjustable. M. Package contents: Three magnetic screwdriver bit sockets.