... in the world that cleans and polishes vertical surfaces! 2.It also ideal for walls,columns,stairs. ModelVertikaHorse power (HP)2HPVoltage ... machine in the world that clans and polishes vertical surfaces! It's also ideal for walls,columns,stairs,bathrooma,kitchens,counter ... a variable speed from 0-1000 rpm and it can work both wet and dry. Thanks to its incorporated vacuum system ...