Feature●Engineered for stainless steel rigid dies fit head types 504A, 711, 713,811A,815A, 816, 817, and 842.●With a capacity of 1 to 2 inches, these threading dies are made to provide longevity and reliability.●The rigid die grinder set is highly adaptable and resists every type of weather & work environment.●With 11-1/2 TPR this pipe threader die set is very ideal for construction sites, factories & plants.●We guarantee a lifelong service for this rigid die set and compensate for all defects & deficiency.Description