Leave the magnetizer on the tool for extra magnetic strength. Instant magnetization, strong magnetic effects, stay magnetized permanently. Perfect for any occasion when needs to add screws. Simply insert the screwdriver bit into the magnetic ring, and the screwdriver head is instantly magnetized and can really hold the screw, easily pick up the screw, and does not fall. Our magnetizer ring is made of stainless steel, magnetic fast, skid-, and great wear-, exquisite workmanship, high , anti-impact, and no damage to the screw and the screwdriver head. Screwdriver magnetic ring allows the user to quickly and easily magnetize small tools and screwdrivers, they attract screws, nuts, or metallic particles for easy starting and removing. This magnetic screw ring can catch the screw easily and quickly, and fix it to prevent the drill bit from slipping and improve the work efficiency., Weight: 0.01763698096 Pounds, Manufacturer: Frewurwer