This grinder uses two horizontal rotating grinding heads to level, smooth or clean the top surface of concrete slabs. Grinding provides a smoother finish compared to other methods such as scarifiers or scabblers. Primarily designed to work the top surface of a floor over large areas, grinders can also be used to level small areas of uneven joints or high spots of 1/16 to 1/8 inch. Counter rotating discs provide balanced torque to prevent pulling left or right.  A 22" grinding width makes for quick removal.  Dust shroud contains grinding debris.  Two position wheel carriage for grinding and easy transport.  Features a 2" standard vacuum port to accomodate most vacuum cleaners for dust-free operation.  Grinding Heads NOT included.