CK D2GS116-P Gas Saver Kit for 1/16" w/Pyrex Cup The clear Pyrex nozzle improves visibility of the weld. The replacement parts are less expensive than standard gas lenses making the Gas Saver Kits more economical. The CK Worldwide Gas Saver Kit saves up to 40% of shield gas consumption while providing better gas coverage versus the standard collet bodies. It allows up to 6 times the diameter of electrode stick out from the cup