Portable Burner equipped with an air intake adjusting seal ring, which can change the flame hardness and temperature by adjusting the sealing ring. Durable brass tube Suitable to connect with self sealing gas cannister (C250) Product scope: outdoor sports, camping, laboratory, medicine, dentistry, handicraft, hardware, etc. Specification: Material: Brass Size: Approx. 9x7x3cm / 3.5x2.8x1.2inch Overall height when connected to Gas Cartridge is: 180mm approx.