Magnetic Ring Alloy Electric Magnetic Ring Screwdriver

The magnetic ring fits for all kinds of 6.35mm shank screwdriver bits. Magnetic force increased 10 times, more powerful clamping, do not fall off to improve efficiency. Universal Magnetic Ring 1/4” Metal Screwdriver Bit Magnetic Ring For 6.35mm Shank Anti-Corrosion Drill Bit Magnet Powerful Ring. Magnetosphere locking screw, tight bite, reduce unnecessary slip by 85%.