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They look ok. The seller only sells welding supplies so that's a good indication.
I have noticed a couple of things with the cheaper welders. The main thing is the control socket for the real cheapies is only 2 pin. That means its only on off which defeats the purpose of a foot pedal. Yours has the 3 pin also which means it is variable. Most cheaper ones don't have ac frequency adjustment which concentrates the arc. Not sure if that's an issue or not, see me thread below.
Let us know how it goes.
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