Separate ferrous scrap and particles using these powerful Separator Bar Magnets. Each bar consists of a series of Rare-earth (neodymium-iron-boron) magnets, encased in 1" dia. 304 stainless steel tube. Each bar has a Female 1/4"x20 Threaded mount on both ends for easy mounting. This magnetic bar is very powerful and perfect for separating out fine particles such as metal shavings, filings, and residue from metal wear, as well as larger ferrous items like screws, nuts, and washers.