DISSTON Blu-Mol Xtreme Spiral Stet Drill Bit provides 4 time faster cutting compared to a standard bit. M35 COBALT provides strength and durability. Titanium Nitride coating extends the life of the bit. Impact rated for high Torque applications. 1/4" Quick Change hex shank for quick change and no slipping during drilling. Continuous cutting action allows for faster cleaner hole enlargement. Self-start dual cutting split point porvides engagement, minimizes walking and increased speed. Drills through Metal, Sheet Metal, Plastic and Stainless Steel. Available in all sizes.