DeWALT DCD777S2TC

"Makita Impact XPS is new innovation in fastening with insert bits and fastening accessories built for the demands of the professional contractor. The Impact XPS Power Bits are designed exclusively fo more→r use with high-torque impact drivers and are engineered to last up to 90-times longer than standard bits. High-strength steel delivers longer bit life and the precision-fit tip is engineered to prevent ""cam-out"" and stripping. The torsion section of the bit flexes under load to take pressure off of the bit tip for increased durability. The high quality steel construction is engineered for increased durability and features a matte nickel surface for best in class corrosion resistance. Impact XPS …

Milwaukee Shockwave Impact Duty #2 3/16 - 1/2 in. Step Bits are engineered to deliver the most durable and fastest impact step bit hole drilling solution. Our step drill bits are made with global mate more→rials and give you best-in-class performance in impact drivers with the versatility to be used in drills. The 1/4 in. hex shank has an optimized Shockzone body providing you with the industry’s most durable shank. A Titanium Aluminum Nitride (TiAlN) coating helps deliver 5x longer life, while the Rapid Strike tip and dual spiral flute produces 2x faster holes

IRWIN Silver and Deming High Speed Steel Fractional Bit is constructed of M-7 high speed steel for high resistance to abrasion during tough drilling applications