Description: 3\/8 - 18 NPT HSS Taper Drill Bit Pipe Tap Machine Screw Tap for Pipes Inner Threading Making   Specifications: Material: HSS Size: 3\/8" - 18 Diameter of thread head: 16mm Length of thread head: 24mm Diameter of thread end: 10mm Overall length: 70mm Quantity: 1pc   Features: -High hardness、 fast cutting、 wear high temperature.  -Spiral groove  is conducive to remove crumbs、 not easily broken tap. -Spiral Tap the crumbs into a spiral up chip evacuation、 it is more suitable for the processing of blind holes and sticky materials processing. -Good abrasion resistance、 long service life. -Sharp knife head、 smooth without burr.   Package Included: 1x screw tap   More Details: