Hart Design Steel Magnet Washer, 3/4 in. is designed to enhance the power and versatility of rare earth magnet discs. These steel magnet cups and washers significantly increase the holding power of rare earth magnets by up to four times, making them an essential accessory for various applications. The steel washers serve as the i strike plate, complementing the cups ly. All cups and washers are countersunk for screw installation, except the 1/4" cup, which features a barbed press fit. For easy removal, you can file a notch on the side of the cup to create a pry point. Made from zinc-plated steel and imported, this washer matches a 3/4" magnet, has an outer diameter of 7/8", and requires a 0 screw for installation. Please note, cups and washers themselves are not magnetic. Model Number: 47313