PRICES MAY VARY. Durable Construction - HSS material with black and gold coating increases lubricity, supplies corrosion protection, and increases durability. Ensures longer tool life in multiple working conditions. Tapered web provides strength, durability, and reduces breakage. Twist Design & Performance- Parabolic flute for better chip removal and reduced heat build-up. Tapered web for greater strength and durability. Accuracy - 135° split point tip engineered for a no-skip, clean and accurat