Description: HSS 6542 high quality tap machine UN 3/8"-20 HSS BSW Tap DIEZ/NPT two types are taper taps. Tapered pipe thread 1.55 degrees, marked ZG (new standard marked RC or R) 2. Cylindrical thread 55 degrees, marked G (new standard described as RP) Tapered pipe thread 3.60 degrees, marked ZZG is not metric thread, screw thread. Application: Suitable for machining iron, steel, copper and aluminum, die steel, etc. Specification: Teeth: standard pipe valves Material : HSS 6542 Precision: H2 grade Color: (as pictures show) Size: 3/8"-20 faucet and die pipes Quantity: 2 pcs Package includes: 1 pcs faucet and 1 pcs die Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.2. Please allow slight manual measurement deviation for the data.