6 Inch Extra Long Design: The elongated design can easily penetrate into narrow or deep concave positions such as engine compartments and equipment , and can reach narrow spaces and solve the problem that ordinary sleeves cannot reach, especially suitable for working conditions with large forces Product Material: from Chrome Vanadium steel (-V), strengthened by heat treatment, built to endure heavy-duty use and deliver exceptional shock resistance. The coating provides an additional layer of protection against rust, significantly enhancing the product's durability and ensuring reliable performance for years to come Hex Magnetic Suction: Inner wall of the sleeve is hexagonal machining, the contact with the screw or nut is larger and more tight, which effectively reduces the risk of slippage and damage to the screw. Built in magnet to firmly adsorb screws or nuts, which can effectively stop parts from falling off accidentally during deep hole work 1/4inch Hex Shank Size Range: Provides a complete range of metric (6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm) and SAE (1/4inch, 9/32inch, 5/16inch, 11/32inch, 3/8inch, 7/16inch, 1/2inch, 9/16inch) sizes and come with 2Pcs S2 hex Screwdriver(PH1 & PH2). Sleeve body or tail has a non slip design , which provides a secure grip even when wearing gloves or with oil on the hands, making it easy to manually fine tune or change the sleeve Easy To Read & Storage: Each driver features color-coded bands (orange, blue and yellow) and clear size markings for quick identification, saving you time and effort. Packaged in a plastic case for easy storage and portability, suit for both DIY home projects and professional use Color: As Shown Material: Chrome Molybdenum Steel Package Contents: 19 Pcs * Magnetic Nut Driver Set Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.