PREMIUM MATERIAL: Made from high-quality S2 steel for superior strength and durability, ensuring long-lasting performance in demanding applications UNIVERSAL COMPATIBILITY: Features 1/4 inch hex shank that fits most power tools including drills, impact drivers, and electric screwdrivers EXTENDED REACH: 4-inch length (100mm) provides excellent access to deep or hard-to-reach fasteners in tight spaces MAGNETIC TIP: Built-in magnetic feature securely holds screws in place for precise and efficient one-handed operation SET CONTENTS: Includes 10 identical bits, perfect for professional contractors or DIY enthusiasts who need reliable backup pieces Upgrade your toolkit with this versatile 10-piece screwdriver bit set. Each bit features a 1/4 inch hex shank and an extended 4-inch length, perfect for reaching deep or awkward spaces. Crafted from durable S2 steel, these bits offer superior strength and longevity for demanding tasks. The magnetic tip securely holds screws in place, preventing drops and making one-handed operation easier. Compatible with power screwdrivers, drill drivers, and impact drivers, this set brings professional-grade functionality to your workspace. The long shaft design provides excellent reach and leverage when working in confined areas or through deep recesses. Whether you're a professional tradesperson or a dedicated DIY enthusiast, these bits deliver reliable performance for various fastening applications.