How:* durable and practical * Compared with traditional Bunsen liquefied gas burners, no need to connect gas hoses and liquefied gas cylinders, so it is very portable anytime and anywhere.* The product is equipped with a sealing ring to regulate the air supply, and the hardness and temperature of the flame can be changed, adjusting the sealing ring.* The flamethrower is made of yellow brass, which is sturdy and durable.* The gas tanks used in the product are American interface propane gas cylinders and MAPP gas cylinders. Product Application Scope: Laboratory, Medical, Dental, Handicrafts, Equipment and other operations such as heating and disinfection! Specification:Product Name: Portable American Bunsen Burner (Bunsen Propane Burner)Product Weight: 185gProduct Size: 110X60X30mm Product Material: Bras + Zinc (Copper + Zinc Alloy)* There are two optional sealing rings for flame adjustment, which are randomly matched. Package Included:1*Bunsen BurnerNotes:1. Due to various factors such as brightness of your monitor and light brightness, the actual color of the product may be slightly different from the pictures displayed on website.2. Please allow a slight manual deviation of the measurement in the data.