A Solid Brass Clip-On Smoke Bell for Oil Lamp Chimneys is an accessory designed to help control and direct smoke from oil lamps. Measuring 3 inches in diameter and 2 inches in height, it clips onto the top of a standard smooth-top glass oil lamp chimney. The brass construction provides durability and heat resistance. Its primary purpose is to capture and funnel smoke up and away from the lamp, preventing it from entering the room and discoloring walls or ceilings. The smoke bell also improves draft and airflow through the chimney for better lamp performance. With its easy clip-on installation, this accessory is a simple solution for controlling smoke output from compatible oil lamps. Works with any standard, smooth-top oil lamp chimney. Will not work with crimp top or fluted chimneys. Clips on to the top of the chimney>. Solid brass. 3" x 2".