The FLEX LDC1509FR is a 5-Inch Scouring Grinder. Features: * Heavy-duty full wave electronic 5" dustless concrete grinder. * Use to grind away seams, cracks and uneven surfaces and to remove residual coatings, paints and adhesives. * FLEX four-fold FR electronic control: with consistent speed control by tachometer generator, soft start, overload protection and temperature monitoring. * Quality shut-off carbon brushes: if the carbon brushes wear down, the motor will be automatically switched off and thus protected from damage. * No rasping or jumping. * The special flexible rubber vacuum ring prevents stones and concrete chips from flying. * FLEX four-fold FR electronic control: with consistent speed control, soft start, overload protection and temperature monitoring. * Vacuum dust collection: protects against abrasive dust, reduces disc wear, keeps concrete pores for the new coat open. * Flexible rubber vacuum ring: moves smoothly over the surface and protects against dust and stones flying out. * Spindle lock: for easy disc changes. What"s In the Box: * FLEX LDC1509FR 5-Inch Scouring Grinder