1. With large suction force, the screwdriver is more convenient to suck parts, and special process is not easy to demagnetize. 2. Phosphating treatmentcan deeply waterproof and anticorrosion, which means can improve life. 3. The screwdiver is simple and reliable to use, just need choose the right interface, insert a screwdriver and knob. 4. Made of chrome vanadium alloy steel, the screwdriver is durable and not easy to damage. 5. The screwdriver is small and convenient, which is convenient to carry with for outdoor work. Item Type: U-Shaped ScrewdriverMaterial: Chrome vanadium alloy steelUses: Accuracy instruments/non-accuracy instruments/hardware daily tools, etc.Diameter of Metal Rod: Approx. 5mm / 0.2inMetal Rod Length: Approx. 80mm / 3.1in