Capacity: 3~35mm. Available in 3 models. Cuts through some of the toughest surfaces ; stainless steel, wall conduit, copper and aluminum. Exclusive "one hand" operation. Traditional tubing cutter plus ratchet function. Ratchet mechanism allows for tight area operation, depending on the pipe diameter, approx 5.5cm. Please make self-test. Cuts without rotating tool completely around tubing.