7/8"-9 UNC Yellow Ring HSSE-V3 Spiral Flute Taps, Sowa High Performance Taps, Mfr#: 123466

HSSE-V3% Vanadium – Superior performance in hardened tool steels such as 4140, 4340, H13, D2. – Up to 35 HHRC Designed for high-speed tapping applications. Developed to withstand the high stress and high heat associated with high-speed CNC production tapping. Features a unique free-cutting design with a special tempering and geometry which contributes to extra tool life.