High-torque, powerful hydraulic root cutting motor kits from Southland Tool come with a motor that produces 225 pounds of torque. It is heavy duty and suggested for tap cutting and cement and calcium carbonate removal. It comes with a set of heavy-duty saws that are 3/16-inch thick. Its four EZ skids are single piece and easy to use. The arbor tool can turn the motor without taking off the saw. 714/632-8198; www.southlandtool.com.