Magnetic Bit Holder 1/4 inch Magnetic retention and secure connection: This 1/4 inch bit holder uses strong permanent magnets to securely hold bits in place, providing a stable and reliable connection during use. No worry about bits slipping or falling off. Compatibility: Compatible with pneumatic drills, electric drills, cordless drills, electric screwdrivers, and more. It works seamlessly with all 1/4' hexshank bits, offering versatile performance across different applications. Convenient extension lengths: Available in 60mm, 100mm, 150mm, and 300mm lengths to reach hardtoreach fasteners. Whether in a tight corner or a deep hole, these extensions make your work easier. Material and durability: Stainless steel construction for longterm use. Durable and reliable, with resistance to wear and deformation. Key benefits: Secure bit retention, broad compatibility with common drill types, multiple extension lengths for reach, and a robust stainless steel build for longevity. Use scenarios: 1) Automotive maintenance: Access recessed bolts or screws in engine bays using the appropriate extension length. 2) Furniture assembly and cabinetry: Reach fasteners in tight corners or behind panels. 3) Electrical and appliance : Work behind panels or inside deep cavities where standard bits cannot reach.