Each powerful ceramic magnet features a welded solid steel construction. Great for retrieving hand tools and other metal items from waterways. Use to hold and position spray nozzles, hoses, temporary wiring and more. Attach a rope or rod to magnet's eyebolt (included) for retrieving or hanging heavy-duty items. More About Ceramic Magnets: Our hard ceramic ferrite magnets are composed of iron oxide and barium or strontium carbonate. Ceramic magnets exhibit relatively good holding strength for their price, making them a popular choice for many consumer, commercial and technical applications. Ceramic magnets have so many practical uses including; craft projects, refrigerator magnets, badge holders, latches, display boards, loudspeakers, security systems, motors, generators & alternators, lifting magnets, brakes, clamps, switches & relays, sweeper magnets, science projects, toys, games, motors, magnetic couplings, POP displays, advertising giveaways, promotional items, novelties & much more.