Nihao&reg; Tube Cutter Fitting for Cooper, Iron, Stainless Steel and &nbsp;Aluminum Tube 3-16cm The tube cutter is made of zinc alloy material which is very durable. It can cut cooper, iron, stainless steel and aluminum tube. It can cut a tube whose diameter is 3-16cm. There are four gyro wheel supporting the tube in order to make the operation time-saving and labor-s It is a very fast cutter. Taking advantage of spring, make the blade moving very fast.