UNIT GiantTech CAT250D DOA !!! NO RESPONSE FROM GIANTTECH Seller is fast to answer your emails when you are purchasing or inquiring to purchase. Check it out for yourself on ebay!! Wish I researched better before buying. GiantTech's customer service on WeldingWeb.com alone would have sent me looking elsewhere. Too many people left hanging by this guy!!! $550 boat anchor!! Money lost, lesson learned.