Quick Release™ Metal Tubing Cutters are the best tracking, easiest cutting tubing cutters available. Cut copper, aluminum, light wall steel and stainless steel tubing. With alternate wheels they will cut a wide variety of plastic pipe and tubing, including muffler systems tubing. (Refer to the REED cutter wheel chart for details on cutter wheels for both plastic and metal tubing.) TC1Q, TC1.6Q and TC2Q sliding bars are die-cast zinc aluminum for greater strength. Each of these three metal tubing cutters also features a built-in reamer and spare cutter wheel in the knob. Long-proven TC3Q and larger models with steel sliding bars withstand professional workloads over the long haul.