CK Worldwide 3 Series Large Diameter Gas Lens Alumina Cups

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CK Worldwide 3 Series Large Diameter Gas Lens Alumina Cups


5% Discount added at checkout for orders of 10+ Cups

CK Worldwide large diameter gas lens alumina oxide TIG torch cups.  Options below for available sizes with interchangeable Weldcraft part numbers.  These cups fit most brands of large diameter gas lenses.

Cup Size Orifice Diameter CK Part#
Weldcraft part#
#6 3/8" (9.5mm) 3AG6LD 57N75
#6 Long 3/8" (9.5mm) 3AG6LDL 57N75L
#6 Extra Long 3/8" (9.5mm) 3AG6LDXL 57N75XL
#6 2X Long 3/8" (9.5mm) 3AG6LDXXL 57N75XXL
#8 1/2" (12.7mm) 3AG8LD 57N74
#8 Long 1/2" (12.7mm) 3AG8LDL 57N74L
#8 Extra Long 1/2" (12.7mm) 3AG8LDXL 57N74XL
#10 5/8" (15.9mm) 3AG10LD 53N88
#10 Long 5/8" (15.9mm) 3AG10LDL 53N88L
#10 Extra Long 5/8" (15.9mm) 3AG10LDXL 53N88XL
#11* 15/16" (23.8mm) 3AG11LD 53N89
#12 3/4" (19.1mm) 3AG12LD 53N87
#12 Long 3/4" (19.1mm) 3AG12LDL 53N87L
#12 Extra Long 3/4" (19.1mm) 3AG12LDXL 53N87XL


  • Regular cups measure 1-7/8" (47.6mm) in length 
  • Long cups measure 2-3/4" (69.9mm) in length
  • Extra long cups measure 3-1/4" (82.6mm) in length
  • #11 3AG11LD cups measure 1-3/16” (30.16mm) in length

Fits 2 Series and 3 Series large diameter collet bodies

*A note about #11 Cups - The #11 cups came into being back in the 60’s for the shipyards. Tapered cups focus the argon and the shipyard workers needed something that would act more like a flood cup.  The shipyards being big accounts who would order large volumes drove the #11 design and it has continued to be produced this way to this day.