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                                  |  | Hardened alloy steel blades. Crimps sheet metal to create a male fitting in a round air duct stove pipe. |   
                                  |  | Superior compound leverage mechanism. |   
                                  |  | Comfortable opening,spring actuated handle with cushion Nickle plated for corrosion resistance. |   
                                  |  | For sheet metal job,a tighter fitting,more self supporting and leak proof connection. |  |  |