The MHS 11 multiheaded concrete floor scrabbler is the ideal machine for concrete keying and laitance removal without damaging the substrate below. This heavy-duty pneumatic floor scrabbler has a cutting width of 9 5/6 in. with production capacity of about 100 sq ft/hr. Applications include laitance removal for large floor areas, roughing concrete before resurfacing, and bridge preparation for waterproofing. CS Unitec Inc.