Premium Material - The extension bit holders are made of high-quality S2 steel, which ensures maximum durability. The aluminum alloy socket is not only rust-proof, corrosion-resistant, and oxidation-resistant, but also contributes to the overall robustness of the tool. Built-in magnetic - Equipped with a magnetic feature at the bottom of the hole, our screwdriver extension ensures a secure grip on the bits, preventing any wobbling during use. Package Contents - 10 pieces 60mm drill bit extensions, enough quantity to meet your needs. Perfect for reaching tight corners and confined spaces, they enhance your versatility on various projects. Improve Your Work Efficiency - The drill bit extensions are specially designed to effortlessly remove or tighten a large number of screws. Ideal for working with hard-to-reach screws. reach, it streamlines your tasks and improves your productivity. Universal Size - Compatible with power drills, screwdrivers, impact drivers, and various other tools,