Guhring 363 14.00MM HSCo T/S Armour Pierce Drill Flute type GV120: Heavy-duty parabolic flute suitable for a wide range of materials. Manufactured to Guhring std. Right hand cutting. Available with steam tempered finish or with TiN coated finish: The titanium nitride coating provides effective protection against abrasive and adhesive wear. Recommended applications: steel cutting. GBP 99.99 1