THIS IS A DEMO OF A WAMAX MILLING SYSTEM ATTACKING A 18\" THICK x 9\" TALL QUICKSET CONCRETE FORM IN A 18\" LINE. THE QUICKSET CONCRETE HAD 8 DAYS OF CURING TIME. YOU CAN PURCHASE THIS AT SEWER EQUIPMENT CO. OF AMERICA 1-800-323-1604. BLOCKAGE, CONCRETE, FULL, MAINLINE, MILLING, REMOVAL, REPAIR, SYSTEM, WAMAX