Borosilicate Glass—Borosilicate glass nozzles are clear, so you can see what you’re working on even in tight corners, but they break more easily than other nozzles. These nozzles require a push-on collet body.

Ceramic Alumina—Ceramic alumina nozzles are the most common nozzles. They’re more durable than borosilicate glass nozzles but can limit visibility since they aren’t clear. Use them for general purpose welding applications.

Quartz Glass—Quartz glass nozzles are clear like borosilicate glass nozzles, but they’re more durable and withstand higher temperatures. They also won’t turn yellow over time like borosilicate glass nozzles. If you're using them as standard nozzles, you'll need an adapter ring (sold separately) to connect to a threaded collet body.

Silicon Nitride Ceramic—Silicon nitride ceramic nozzles are just as durable as aluminum oxide ceramic nozzles, and they’ll work at higher temperatures. However, they also limit visibility because they aren’t clear. Use standard nozzles with a threaded collet body.

For Narrow Gas Coverage—Nozzles for narrow gas coverage are good for welding most metals.

For Wide Gas Coverage—Nozzles for wide gas coverage produce a large cloud of shielding gas, so they’re a good choice when working with metals that are difficult to weld, such as titanium and Inconel. However, they’re harder to fit into corners than standard nozzles.

Standard TIG Welding—Standard nozzles require a threaded collet body.

Gas-Saving TIG Welding—Gas-saving nozzles use less gas than standard nozzles but won’t compromise the quality of your weld. These nozzles require a gas diffuser, which prevents oxidation and pitting in the weld by reducing gas turbulence and improving shielding.