This handy bottle opener has strong magnets on the back of it, so it can be firmly mounted on a fridge. Theres also a magnet built in to the natural bamboo board, to catch the bottle cap as it falls from the opener. 20 ( l ) x 8 ( w ) x 4.4 ( h ) cm bamboo & steel strong magnets on the back to mount on a fridge built-in magnet for catching falling bottle caps packaged in a natural kraft Okiyo gift box