HIGH DURABILITY - Made from premium Chrome Vanadium steel with Black Phosphate Coating for durability, this set resists abrasion and corrosion, ensuring long-lasting performance in various tasks. STRONG MAGNETIC - The magnetic feature ensures secure and effortless installation or removal of hexagonal nuts and fasteners, enhancing your work efficiency and ease of use. QUICK-CHANGE - The 1/4" Quick-Change Hex Shank allows for swift transitions between tasks, saving you time and providing convenience during projects. VERSATILE USE - This 18-piece extra long nut driver set includes both SAE and metric sizes, making it perfect for a wide range of applications. Compatible with impact drills, bit drivers, and hex socket ratchets. EASY ORGANIZATION - Comes with a convenient storage case for easy organization and transport, keeping your tools neatly arranged and readily accessible. UNIVERSAL FITMENT - Suitable for variable of brands screwdrivers or impact drivers like Makita, Bosch, Hitachi, Milwaukee tools, etc. HORUSDY 1/4" magnetic nut setter is made of industrial grade chromium vanadium steel, which is strong and durable, and has a black phosphate coating for corrosion resistance.