Feature:1. Outstanding Diffusion: Tig welding cup torch ceramic twin pack gives plenty of coverage and outstanding diffusion. The inside diameter is 3 or 4 in (19mm), but the unique diffuser design provides better coverage than most other cups with the same diameter.2. Practical Use: Ceramic cups are designed for use with 3 or 32in electrodes only and should not be used with AC power (175A DC Maximum). This is because the diffuser will arc and 175A is the upper limit.3. 2Pcs in 1 Set: Tig welding torch kit including 2pcs tig welding cup in total, welding torch cup providing you with a prefect solution for replacement.4. High Adaptability: Ceramic cup kit is made for 9 and 20 style torches, and is set up for use with a 3 or 32 in (2.4mm) electrode. Fit for DB SR WP 9 20 25 WP 17 18 26 tig welding torch.5. Easy to Install: Tig welding torch set designed to have a compact size and a light weight, the ceramic welding cup installation is very easy to complete.Specification:Item Type: Tig Welding CupsMaterial: CeramicMaximum Use Current: DC 175AColor: WhiteScope of Application: Suitable for DB SR WP 9 20 25 WP 17 18 26 tig and other welding torches.Package List:2 x Tig Welding Cups