This Tezla Gas Jet Nozzle Injector is designed for LPG or NG gas appliances. It features an orifice size of 0.87mm, an M6 thread, and a 7mm head. The nozzle is compatible with a wide range of cooker and hob brands including AEG, Ariston, Baumatic, Beko, Bosch, Candy, Cannon, Creda, Electrolux, Gorenje, Hotpoint, Indesit, Siemens, Stoves, New World, Zannusi, Vitralux, and Whirlpool. Please note that any gas work should be carried out by a Gas Safe registered engineer. The jet sizes have a tolerance of +/- 0.1mm. It is suitable for Natural Gas (G20), LPG (GPL, GLP, U-LPG), Propane (G30), and Butane (G31).