Here’s an extremely useful tool for making perfect circles with your plasma cutter. You’ll be surprised how easy it is to cut perfect circles, every time!! simply rest the plasma torch head in the wheeled carriage, set the distance from the centering point, roll the torch in a perfect circle. Includes wheeled torch carriage, three centering points (magnetic, contact-point & through-hole) and two distance rods at 10″ (250mm) & 17″ (440mm) lengths packed in a sturdy storage case.