Specifications Name:Magnetic Hex Bit Extension Holder Material: Vanadium steel Size:60MM/2.36INCH, 100MM/3.94INCH, 150MM/5.91INCH Description Premium Quality MaterialThe bit holder for impact driver is made of industrial heavy-duty vanadium steel for greater hardness and long life.This drill extension bit holder is perfect for your impact driver or drill bit set. Engonomic Grip EnhancedEnhanced for comfort and stability, this Drill Bit Extension Set features an ergonomic grip, perfect for prolonged use and precise control in all drilling tasks. Secure Magnetic RetentionThe integrated magnet actively locks bits in position during operation. Works with both hex-shank and quick-release systems, enabling single-handed bit swaps without slippage. Universal sizeThe 1/4 inch Hex Quick Release Bit Holder is designed to fit universally. all insert and 1/4 inch hex bits, this extension set is a must-have for your tool collection, delivering versatility and ease of use for any screw, nut, or hexagonal shaft. Professional OperationOur drill bit extension set have three different lengths, specially designed to meet various deep operation needs.So you don't have to worry about hard-to-reach or hard-to-reach places anymore. Package 1PC Magnetic Hex Bit Extension Holder Heavy-Duty Materials: Crafted from industrial-grade materials to withstand tough drilling tasks: the bit holder/extender uses vanadium steel for exceptional hardness and rust resistance, while the sleeve features high-quality aluminum alloy for added sturdiness. A sleek red coating provides secondary protection against wear and corrosion. Dual Locking for Secure Bit Retention: Equipped with a dual-locking system: integrated strong magnetism actively locks bits in place, plus a buckle lock for extra stability. This double security ensures screwdriver bits stay steady during operation—no slippage, even in high-impact drilling or when working at angles. It works seamlessly with hex-shank and quick-release systems, allowing one-handed bit swaps to keep your workflow smooth and precise. Ergonomic Grip & 3 Adjustable Lengths: the set includes three different extension lengths, tailored to reach hard-to-access areas that standard bits can’t reach. The enhanced ergonomic grip reduces hand fatigue during prolonged use, while also improving control—critical for precise drilling or screwdriving tasks. Universal 1/4-Inch Hex Size: Features a universal 1/4-inch hex quick-release design, all insert bits, 1/4-inch hex bits, and a wide range of tools: pneumatic screwdrivers, electric screwdrivers, pneumatic drills, manual screwdrivers, impact drivers, and drill bit sets. It’s a versatile addition to any tool collection, handling screws, nuts. Quick-Change Mechanism for Enhanced Work Efficiency: The quick-release bit holder has a sliding locking mechanism on the head: simply slide it to release or attach bits in seconds, no time wasted on complicated disassembly. This design drastically speeds up bit changes, especially when switching between tasks, boosting work efficiency and precision.