WerkMaster™ floor refinishing machines were initially manufactured to polish Absolute Black granite, one of the hardest stones to polish. Realizing a need for a machine that could also grind and polish terrazzo and concrete, as well as being able to refinish hardwood and VCT tile floors, the original machine was completely redesigned. The result is the WerkMaster's patented eight head Octi-Disc™ Technology with the ULTRA-Flex Plug 'N Go Tooling System. Our machines grind, sand, strip, buff, burnish, polish and edge to within 1/8? (3 mm) of the wall or cabinet kick. The advantage of a WerkMaster is that one machine can outperform the competition's technology on any hard surface - floors, walls, ledges, countertops, stairs and risers. more... See more text