Best Seller | Dowling Magnets Magnetic Field Viewing Kit Educational Game | 3 H x 4 W x 6.75 D in | Wayfair DO-731025-3 Mess-free! Steel filings are safely sealed in a scratch-resistant, transparent viewing tray for your investigations. Each kit includes rubber-coated magnets (0.75" disc magnet and 1" bar magnet) and filing-filled tray measuring 3.44"D. Sold as a pack... more | | $23.14 go to store |