Sutton Tools Blue Bullet Long Series drills offer longer flute & overall length than standard drill bits making them ideal for drilling deeper holes. Built with a 118 Standard point for general purpose applications. Made from M2 High Speed Steel (HSS) offering the best combination of strength, heat and wear resistance along with the signature Blue Surface Finish for ferrous applications. The steam oxide finish prevents chip build-up on the cutting edges and reduces cutting friction, especially in low carbon steels.