Narwhal 7/16-inch Cobalt Drill Bits - 3 Pack Industrial Grade M35, 5-1/2 inch Length, 135-degree Split Point

Narwhal 7/16-inch Cobalt Drill Bits — 3 Pack

This three-pack is built for serious metalworking tasks, from stainless steel and hardened steel to cast iron and bronze. The bits feature a 7/16 inch diameter with a flute length of 3-3/4 inches and a total length of 5-1/2 inches, designed to handle tougher materials with confidence. The M35 cobalt alloy delivers a durable edge while maintaining a sharp, true cut that can help you push through demanding jobs without frequent tool changes.

Key advantages at a glance

• 5% cobalt content with precise full-ground tips for consistent hole diameter
• 135-degree split point guides the bit for an initial bite, reducing wandering in hard materials
• Longer flute length aids chip evacuation, helping maintain cutting efficiency through deeper holes
• Includes a rugged plastic storage case to keep bits organized and protected
• Versatile for metalworking applications, including stainless steel, hardened steel, cast iron, bronze, and titanium
• Narwhal USA-based customer service available for support and assistance

Real-world use and expectations

In typical shop settings, you may notice a clean entry with minimal wandering when starting holes in prepared workpieces. The combination of a sharp edge and a precise 135-degree point helps maintain hole size accuracy while managing heat with proper feeds and lubrication. The 5-1/2 inch overall length provides reach for deeper pockets, while the 3-3/4 inch flute length supports efficient chip removal during longer cuts.

• Controlled starts on tough metals reduce bit walking and improve repeatability
• Potential for longer bit life with appropriate speeds and lubrication
• Suitable for fasteners, brackets, and other metalworking projects requiring robust tooling

Care, compatibility, and what you get

Store the bits in the included case when not in use, and avoid overheating by using moderate cutting speeds and coolant where appropriate. These cobalt drill bits are designed for metalworking tasks across stainless steel, hardened steel, cast iron, bronze, titanium, and more. The kit ships with:

• 3 × 7/16-inch cobalt drill bits
• Plastic storage case for organization and protection
• Support from Narwhal’s USA-based customer service