Features 1、Built In Strong Magnet: The magnetic drill extension bit holder features a powerful built in magnet, ensuring that screwdriver bits are securely held in place. This design allows for easy one handed bit changes, enhancing usability and efficiency during drilling tasks. 2、Versatile Length Options: This set includes 3 1/4 inch magnetic drill bit extensions with 3 different lengths, 60mm, 100mm, and 150mm. This variety makes it easy to tackle various drilling needs, whether you are working in tight spaces or requiring additional reach for larger projects. 3、Rugged Alloy Steel Construction: Crafted from excellent alloy steel, these wood spade drill bit extensions are designed for durability and longevity. The robust material ensures that the extensions can withstand the rigors of regular use, making them a good addition to any toolbox. 4、Integrated Structure: The integrated construction of these drill screwdriver bit extenders is engineered to concentrate force effectively, reducing the risk of breakage and enhancing performance. This design maximizes the strength and stability of the tool, ensuring a dependable drilling experience. 5、Wide Applications: These hex shank drill bit extenders are suitable for both professional and handcraft projects, providing flexibility and convenience in various applications. Whether you are assembling furniture, working on home improvement projects, or performing maintenance tasks, these extensions will meet your drilling demands with ease. Specification Item Type: Drill Bit Extension Material: Alloy Steel Size: Approx. 60mm / 2.36in, 100mm / 3.94in, 150mm / 5.91in Package List 3 x Drill Bit Extensions