Ridgid 35850 Pipe Tap This item is 35850 TAP, 1-1/2 NPT E5119 This product is used for pipe-taps This product manufacture by United States Drill size: 1 47/64-Inch Nominal pipe size: 1-1/2-Inch Threads per inch: 11-1/2 Weight: less than 1/2 a pound Ridgid covers its products with a lifetime warranty against defects in material or workmanship for the life of the tool.