TIG nozzles (also called cups) come in a variety of different sizes and provide a given amount of shielding gas coverage to the weld pool based on their size - a smaller nozzle provides less gas coverage than a larger one.
WP-9, WP-20 torches
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This product can expose you to chemicals including Formaldehyde (gas), which is known
to the State of California to cause cancer. For more information go to www.p65warnings.ca.gov