Quality and Durability Crafted from grade Chrome Vanadium steel (CrV), this 21piece impact nut driver set is designed for heavyduty applications and longlasting performance. The forged construction offers exceptional strength and shock resistance, while the phosphated coating provides reliable protection against rust and corrosion. Built to withstand demanding tasks, these nut drivers deliver consistent results whether used daily or occasionally. Comprehensive Size Range for Multiple Tools Includes both metric sizes (5mm, 5.5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm) and SAE sizes (1/4', 9/32', 5/16', 11/32', 3/8', 7/16', 1/2', 9/16'), ensuring compatibility with a wide variety of fasteners. Designed for use with manual or power tools, the nonslip grip provides comfort and secure handling during extended use. Whether you are working with a cordless drill, impact driver, or hand wrench, these drivers adapt easily to your tools. Upgraded Features with Convenient Storage This updated set now includes 5mm and 5.5mm metric drivers to cover an expanded range of fastener sizes. Each piece is stored in a durable plastic case, keeping all drivers organized and easy to transport between job sites or around the home. Stronger magnetic tips ensure fasteners stay in place for more precise and efficient work, making them ideal for quick assembly or disassembly tasks. Extra Long Design for HardtoReach Areas Each driver measures 6 inches in length, providing extended reach into tight spaces and deep recesses where shorter tools cannot fit. Clear size markings are laseretched onto each shaft for lasting visibility, while colorcoded bands (red for SAE, blue for metric) make identification fast and accurate, saving you valuable setup time. Versatile Applications for professional mechanics, construction workers, and home DIY enthusiasts: Performing maintenance or assembly on appliances and machinery. Installing or removing automotive and bicycle components. Building furniture or working on home improvement projects where magnetic retention and extended reach improve efficiency. This 21piece impact nut driver set combines strength, precision, and convenience, making it a dependable choice for both professional and everyday use.