Construction Made from durable Chrome Vanadium steel (CRV) for strength and performance Heattreated for hardness and wear resistance, ensuring a long service life Secure Bit Retention Builtin permanent magnet in the shaft holds bits firmly in place Ideal for working with screws in hardtoreach areas, reducing slippage and improving accuracy Easy QuickChange Design 1/4 inch hex shank allows fast bit changes and smooth onehanded operation Adjustable collar for precise control during use Compatible with most standard drill chucks and power tools Practical Size Range Includes three extension lengths: 2.5 inch (60 mm), 4 inch (100 mm), and 6 inch (150 mm) Compact and portable set meets a variety of job requirements Versatile Applications for assembling furniture where screws are recessed or obstructed Useful for automotive repairs involving tight spaces under the hood Ideal for household maintenance tasks such as fixing appliances or installing shelves Reliable Performance Strong magnetic hold keeps your bit steady, increasing efficiency and reducing frustration Quality materials and design provide dependable performance in professional and DIY projects