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 * 45mm x 4mm rust-proof aluminum carabiner with spring-loaded gated for quick on-off * Or use 1" nickel-plated steel split ring for semi-permanent items