Tanoi Metric Fine Tap Oxide Spiral Flute HSS-E V3 for most materials M30x1.5Designed for metalworking professionals and serious hobbyists, the Tanoi Metric Fine Tap M30x1. 5 with spiral flute delivers precise, reliable threading across a wide range of materials. Its HSS E core and durable titanium coating provide robust performance for both single pass and multi pass tapping tasks. Material: HSS E (cobalt enriched high speed steel) for enhanced toughness and heat resistance in demanding tapping applications. Coating: Titanium