Creative Hobbies M999M Mason Jar Oil Lamp Burner -2 Pack makes it easy to convert your Mason Jars into Unique Oil Lamp conversation pieces! This brand new Mason Jar oil lamp burner / chimney holder features bright brass plated finish, 6" long x 3/4" wide cotton wick and wick height adjusting knob on the side. Each burner comes completely assembled with a 2-3/4" inside diameter Mason Jar Lid that fits regular width mason jars. These burners hold standard 3 Inch diameter bottom fitter glass chimneys. The mounting collar fits regular mouth Mason Jars and is 2-3/4 Inch inside diameter. The bottom collar can also unscrew if needed and when you take off that collar you have male threads 1-3/16" in diameter. Use with any standard lamp oil.