Model UMMF Permanent Magnet Lifter has a strong magnetic path produced by Neodymium magnets. Power to the magnetic path is controlled by turning the manual handle, its lifting power will never weaken. In loading and unloading, the lifter can hoist iron and steel blocks, cylinders and other materials onto magnetic materials for linkage or connection. Great for loading, unloading, and moving. The UMMF permanent magnetic lifters are ideal for factories, docks, warehouses and transportation needs. Maximum working temperature