SUPER-Strong Hook Eye Neodymium Magnet with Carabiner Holds 35 Lbs! Unbelievably strong Neodymium magnet base with aluminum carabiner key holder Neodymium alloy produces strongest permanent magnets known - stronger than rare earth magnets 1" magnetic base holds to any ferrous (iron-containing) metal surface with up to 35 lb force 11/16" thick aluminum carabiner separates for adding keys, etc, non-rust nickel plating Great for keys & other important items you don't want to lose; bright chrome finish