Features The small and easy-to-transport universal type can be picked up and used in various cutter bars. Combined magnetization and demagnetization: Place the magnet sleeve directly on the screwdriver rod to increase magnetism, prevent the screw from falling off and increase work efficiency Slide the screwdriver rod or bit back and forth against the side groove to remove the magnetism. Built-in powerful ceramic with instant magnetization. The shell is made of high quality ABS plastic, strong and wear-resistant. Small size, easy to carry and store, convenient to use and good performance Specification: Item Type: Bits Magnetizing Ring Material: Plastic Magnetic Sleeve Applicable: Screwdriver or bit with a maximum shaft diameter less than approx. 6.35mm/0.3 inch Color: Blue and Black Size: approx. 28 x 17 mm/1.1 x 0.7 inch Package list: 3 x Bits Magnetizing Ring Package List 3 x Bits Magnetizer Ring