2-Pack SUPER-Strong Neodymium Magnet Holds 35 Lbs! Carabiner Snap Hook , Split Ring and Orange Protective Cover Unbelievably strong magnet holds up to 35 pounds. Neodymium alloy produces strongest permanent magnets known - stronger than rare earth magnets. Attach to any ferrous metal object; includes carabiner, split ring for extra versatility and protective orange magnet cover. 45mm x 4mm rust-proof aluminum carabiner is spring-loaded for quick on-off. Or use 1" nickel-plated steel split ring for semi-permanent items.