Material: Alloy Steel + Strong Magnet Color: Red Size: 21*15 mm Weight: 8g Package includes: 3 pcs * Strong Magnetic Rings Screwdriver Head Magnetic Ring: Screwdriver head magnetic ring three piece set is designed to securely hold screws in place, ensuring efficient and precise handling, offering instant magnetization for all screw-driving tasks Quality Material: Constructed from long lasting stainless steel, this magnetizer ring offers superior wear resistance and long-lasting performance, exquisite workmanship, high precision with various tools while safeguarding both screws and screwdriver heads from damage Permanent Magnetism: Experience instant magnetization with lasting magnetic power. Secure the 1/4 inch/6.35mm universal strong magnetic screw ring magnetic ring to your screwdriver bit to instantly boost magnetic grip for any fastening task Easy to Use: Simply insert the screwdriver bit into the magnetic ring, the screwdriver head is instantly magnetized and can really hold the screw, easily pick up the screw and does not fall Widely Used: This magnetic screwdriver ring can be used in various applications, helping you tackle many work tasks. It's ideal for auto repair, furniture assembly, accessory fixing, and other various installations. This handy tool makes your life easier