Features:

• 29pcs set: 1/16"-1/2" by 64ths.
• Ground from the solid.
• Straight shank.
• Right-hand.
• With aggressive 135° split points, these cobalt drills bits not only  last longer while drilling but also cut faster than standard high-speed steel bits. It's ideal for drilling cast iron, heat-treated steel, stainless steel and other hard materials.