Constructed from robust galvanized alloy steel, this magnetic screwdriver bit holders features anti-slip rubber sleeves for enhanced grip. The set includes 80mm, 120mm, and 140mm extensions, each equipped with a magnetic base to securely hold bits in place during use. Enhanced with a built-in locking mechanism, the magnetic interface of these bit holders ensures a tight grip on screwdriver bits, preventing slippage and enhancing your tool's efficiency. The strong magnetism aids in quick bit swaps, making your work smoother and faster. Designed for user comfort and precision, the magnetic drive guide features a separation between the outer sleeve and bit shaft. This allows for a firm hand grip on the sleeve while the screwdriver rotates freely, enabling precise control and easier screw positioning. These bit holders are more than just extensions; they feature a self-retracting guide sleeve that covers long screws, aiding in precise placement and driving. This design prevents screw wobble and protects your fingers from injury, enhancing both safety and efficiency. Versatile and practical, these magnetic drill bit extensions are suitable for a wide range of tools including screwdrivers, drills, and batch heads. The universal hex shank is compatible with standard power drills, 1/4 inch impact drivers, and hand-held drivers, making them a must-have in any tool kit. Color: Black & Silver Material: Metal Package Contents: 6 x Drill Bit Holder(80/120/140mm, 2 each) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.