The gas outlet or orifice of a TIG ceramic cup is measured in 1/16” (1.6mm) increments, for example a No. 4 nozzle is 4 x 1/16” = 1/4” (6.4mm) in diameter.
These ceramics are designed to be used with standard size gas lenses.
Compatible with WP 17, 18 & 26 type TIG Torches.
