Atlas Copco driver 12 volt working order. As you know these are industrial quality. If you are use to the generic brands ..you may be pleased with these. Auction is for one driver .... a dozen avaialble for now anyway. If you would more than one or all send a message and w ecan combine shipping save you some money. By the way if you do not want to get Atlas copco batteries it appears Milwaukee tools battery interchanges works in these drivers but you decide. thanks