D110 - Long Series Drills Blue Bullet Sutton Tools Blue Bullet Long Series drills offer longer flute & overall length than standard drill bits. Ideal for drilling deeper holes. 118 standard point for general purpose applications Precision ground flute designed for fast chip removal Made from M2 High Speed Steel (HSS) offering the best combination of strength, heat & wear resistance 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 Diameter 12.7mm / 1/2 Length 197mm Flute Length 121mm