12 TIG welding cup torch ceramic twin pack gives plenty of coverage and outstanding diffusion. The inside diameter is 3/4” (19mm), but the unique diffuser design provides better coverage than most other cups with the same diameter.
12 ceramic cup kit is made for #9 and #20 style torches, and is set up for use with a 3/32" (2.4mm) electrode. Fit DB SR WP 9/20/25 WP 17 18 26 TIG Welding Torch
#12 ceramic cup should not be used with AC (175 AMP MAX on DC!). If you have a #17 or #26 Style torch, you'll need the #17 torch adpater kit. 12 Ceramic cup will handle up to 200 amps non continuance, recommended for DC only applications.
Currently the 12 is designed for use with 3/32" electrodes only. It's not for AC since the diffuser can arc out, and 175 amps is the upper limit.
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