Dowling Magnets® Iron Filings, Variety, Laboratory Science, Science Resources, Grades 1+, Pack of 3 Safety The rolled format of this

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Dowling Magnets® Iron Filings, Variety, Laboratory Science, Science Resources, Grades 1+, Pack of 3 Safety The rolled format of thisGo beyond standard iron filings! Get three different results in your STEAM magnetism experiments! Includes three jars, each with a different particle size of iron filings: FINE 100 mesh, MEDIUM 40 mesh, and COARSE 20 mesh. Each jar features a convenient, twist top shaker lid with four options (sprinkle, sprinkle more, pour, or screw off the entire top). Reusable put clean filings back into the jar. Each pack includes three jars (12 oz each of 100%