As industrial plant owners we buy them from a local supplier. And of course they don't make them like they did 30 years ago. But these grinders: THEY HAD CONTINUED TO LAST 2 WEEKS. Is it complete scrap or are they sold as new after a general overhaul. I don't know what they are but they are the exact same grinder models we buy locally and they last almost a year before the brushes wear out. Last time we bought them at Revain.