The Handi-HookTM is a powerful ceramic magnetic assembly with unlimited uses. Hang a drop light underneath an auto hood. Hold and organize cables, wires, hang decorations, signage and banners. Hold keys, tools and utensils from any ferrous metal surface. Includes liner to prevent surface scratches. 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.