Just bought myself one of these of ebay from america (amazonstar) for £19 plus £12 carriage, at that price didn't expect too much, paid more than that for my last non auto darkening one...pleasantly suprised don't know how I've managed all these years without an auto one
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side veiw
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To be honest for Mig most auto-darkining ones are fine....

Tig gives off less light and you might need a better helmet for TIG... But for bog standard MIG a cheapo auto-darkening helmet works just fine IMHO...

i have one from the same place and use it for tig
seems ok

Just recently bought the same one and i am very happy with it!

MIne looks pretty much the same as that, Very good for the money..