Europa Threading Tap - Spiral Flute - Metric Coarse - HSS-E - Green Ring - M18 x 2.5The Europa Threading Tap with a Spiral Flute is a rugged, high precision tool built for metric coarse threading. Designed for engineers and workshop pros, it delivers reliable internal threads in challenging applications with consistent results. Material: HSS E (high speed steel with cobalt) for exceptional hardness, wear resistance, and heat tolerance. Thread format: Metric coarse threading, M18 x 2. 5, tailored for robust, standard thread