- Magnetic Screwdriver Extension Bit Holder : Constructed from durable carbon steel, this bit holder features a quick-release mechanism for fast and effortless bit changes. The magnetic design securely holds standard screwdriver bits in place, preventing slips during use. - Standard 1/4-Inch Hex Shank : With a standard hex shank size of 6.35 mm, this extension bit holder is compatible with electric and pneumatic screwdrivers, as well as other power tools. It accommodates a wide array of screwdriver bits, ensuring versatility for various tasks. - Three Length Options : This set includes three extension bit holders of different lengths: 60 mm, 100 mm, and 150 mm. This range allows you to easily reach screws in tight spaces or at various depths, providing flexibility for any project. - Rust Resistant : Made from high-quality carbon steel, these bit holders are built to last. They are also rust-resistant, making them suitable for use in different conditions and environments. Use Cases : - Ideal for assembly tasks in tight spaces, such as furniture assembly or electronic repairs. - Perfect for automotive work, allowing access to hard-to-reach screws in engines or interiors. - Great for DIY home projects, ensuring precise and safe screw driving across various materials.