Removes up to 200 sq. ft. per hour of 4″ ceramic tile set in standard thin-set. Provides 2,500 hits per minute. ALR-E Ergonomic design lets operator stand upright eliminating backaches. High-strength tubular handle and soft foam hand grips for operator comfort. Quick-change, hardened steel tool chuck accepts dozens of accessories. Available in heavy-duty steel or lightweight aluminum. Requires only 6-8 CFM at 80-90 PSI.