Item name: Herbert Arnold 40mm Zenit - Standard Star Centerfire [40MMHERBIE] Item Description: J HOWARD STYLE! Noiseless bench burner, for gas and oxygen, burners for natural gasand propane with special flame stabilization system allowing to operate the burner even with a surplus of air and thus with a cooler flame - mounted on solid cast iron foot with ball joint. Advantages: Noiseless working method. Large field of application. Stable tight-knit flame. From a sharp & concentrated pin-point flame to intensive flames Easily adjustable by single twist grip. Burner control via ball valves, maintenance free and durable. High efficiency through intensive gas combustion. Long lasting by using high-quality materials and components. Burner head is solid, made from no scaling stainless steel. Connection Glass with Thread. Technical Data: Head diameter: 40mm Works borosilicate glass of a tubing diameter up to approximately 80mm Gland diameter gas - 9mm Gas for hose of size: 9mm Connection thread gas: G 3/8"LH. Gland diameter - Oxygen for hose of size: 6mm Weight - 15.5 lbs (6.9 kg) How It's Sold: Each torch is sold individually. Item Reference Materials: To view more literature on Herbert Arnold bench burners click here. Related Products Herbert Arnold 50mm Zenit L Marver Herbert Arnold 100mm Zenit L Marver Griffin Marver for 40mm Zenit Blast Shield Marver for 40mm Zenit