Universal 21mm Removable Magnetizer Ring Steel Screwdriver Bit

Insulation: No Material: Metal Hardness: HRC60 1 X Magnetizer Ring Size: 21 * 12 mm Screw head: purpose Explosion-proof: No Magnetism: Strong magnetism Strong magnetism the screw from falling off. buyer: Due to lighting effects display brightness manual measurements etc. the color and size between the photo and the actual item may vary slightly. Sincerely that you can understand! Thank you! new high quality. Use it to magnetize the 6.35mm batch head. -impact and hard great wear . Made of steel good workmanship high precision.