TEMCo TH0237 HVAC Refrigeration REVERSE Ratchet Tubing Bender Soft Copper Tube 5 Year Warranty Includes Forward & Reverse Bending Capability. Non-Marking Polymer Die Sets: ", 5/16", ", ", ", ", " Bends Soft (annealed) Copper, Aluminum up to 0.04" Wall thickness Hardened Steel Ratchet Mechanism is Guaranteed to Outlast Generic Models. Quick, Effortless and Simple to Operate. Produces Perfect, Uniform Bends every time.