With A working width of 20” and a wide range of grinding, sanding, polishing, and scraping attachments, the Spirogrinder series is highly versatile and delivers excellent results on a wide variety of floor surfaces including marble, terrazzo, stone and concrete. All Spirogrinder machines may be used for wet or dry applications, and the VS models offer complete control over operating speed. Three specially designed rotating heads mounted on a counter-rotating planetary driver grind coatings and paint off of hard floor surfaces to leave a smooth, open, professional finish. Brush skirt and optional vac system enables dust-free operation on all models, and optional, add-on stackable 20, 30 or 35 lb. weights are also available. Spirogrinder machines are well-engineered, sturdy, economical, efficient, and so easy to use that even unskilled personnel can produce expert results.