KEG Technologies heavy-duty chain cutters are high-speed, high-torque, water-powered cutting tools. Their rugged stainless steel construction requires only soap and water to clean. Along with root cutting, they are designed to remove protruding laterals, mineral deposits, grease and concrete. The roller chain is forgiving on pipe walls, and chain blocks are available for tough roots and hardened deposits. Users can vary the rpm and torque output by changing the spinner length along with jet size, pressure and flow. They are available in three models ­— 150, 200 and Supernova — and work in pipes from 6 to 48 inches when equipped with proper skids and distance plates. 866/595-0515; www.kegtechnologies.net.