XIANQI Removable Screw Magnetic Holder is removal, easy to install and remove which improve efficiency. Bit Magnetizer Ring has increased magnetic force, stronger clamping force, and does not fall off. Screwdriver Bit Magnetic Ring uses magnetosphere locking screw to tightly bite and reduce unnecessary slip. Bit Magnetizer can accurately lock screws, reduce abrasion to the the screw and the screwdriver head, extend service life span. Magnetic Screw Ring is made of alloy steel, fits for 6.35mm/ 1/4" shank screwdriver bits. Description Magnetic Screw Ring only fit for double heads screwdriver bits. Made of alloy steel, the Bit Magnetizer Ring has fine workership, high efficiency and long service life. It is more convenient to fit the grooved screwdriver bit, suction screw, fixing screw and mounting screw. Features Magnetic Screw Ring -Color: As Shown -Material: Alloy Steel -Size: 2.3x1.5x1.5cm/0.91x0.59x0.59 inch Note: 1.Color may have a little difference due to lights, screens, etc. 2.Due to different manual measurement methods, please allow slight size differences. Package Including 1 * Magnetic Screw Ring