Grinding away gummy coatings such as mastic, glue, adhesives, epoxies, thin-set, paint and other coatings. This unit allows the blades to stay unclogged and clean. To be used with water only – no chemicals. Water helps blades stay cool. Use in a small circle, left to right (counter-clockwise) – not like the normal span of the floor buffer. Do not turn on edge to add weight to unit. Let the blades do the work. This 16″ tool is to be used on our 17″ floor buffer. Do not use on any other floor but concrete floors. Avoid un-even floors, patios or outside sidewalks and decks. MUST STAY WET AT ALL TIMES TO KEEP TEETH HEALTHY AND DUST TO MINIMUM. TEETH REPLACEMENT BLADES ARE MEASURED AT PICK UP AND RETURN TO ADJUST FOR USAGE.