Unusual Hand-Carved Wooden Frog Oil Light - Three Carved Frogs - The Little Frog In The Centre Lifts off to Reveal A Coiled Wick Which Extends Inside Both Large Frogs on Either End & Out Through a Metal Cuff Attached to Their Mouths 25 cm From Wick to Wick 10 cm Tall 4 cm Wide This Has Never Been Used So I'm Unable To Comment On How Well It Works or Which Oil To Use - I Would Advise Placement Well Away From Anything Combustible - Would Be Perfect For An Outside Setting & Could Possibly Be Used With Citronella Oil - Would Make a Great Barbecue Talking Point While Taking Care of Pesky Insects!