Wirtgen's Fast-Change System (FCS) allows standard 79-inch milling machines to cut 2, 3, 4, or 5 feet wide by changing the cutter shell in about three hours. The system also makes it possible to excavate shoulders at up to 500 tons per hour. It permits operators to change drums of different working widths, with tool holders fitted, on the jobsite. It's an option on the company's small W 600 DC; medium-class W 1000 F, W 1200 F and W 1300 F; large W 1900 and W 2000; and the W 2200. Estimated list price: $40,000.