Reliably cuts casing, pilings and other round, hollow tube from the inside diameter. Cutting below the mudline (BML) is made safe and efficient with this unique tool. No external dredging or digging is required. Simply lower the ID Milling Machine into the cleaned pipe, activate the self-centering mechanism and begin your cut. Mactech’s unique ID Milling Machine is your solution to limited access, round pipe severing applications.