Hopper magnet is a unique device used to protect all kind of machines from iron contamination like nuts, nails, and iron bits. These ensure the hassle free and smooth operation of the machine. There are total four standard sizes, both in round and square are available and can be selected on the basis of the size and shape of the hoppers. High power magnetic rods are provided which prevents any iron material while entering into the machine. We also offer special size hopper magnets.