8 PCS HSS Cobalt Silver and Deming Drill Bits Set Large Size 9/16 inch to 1 inch

8 PCS HSS Cobalt Silver and Deming Drill Bits Set

This high-speed steel cobalt drill bit set features reduced shanks for drilling large holes using standard drill chucks.

Overview

This 8 PCS HSS cobalt silver and deming drill bits set offers large-diameter cutting capabilities for tough metalworking tasks. Crafted with cobalt alloy, the 8 PCS HSS cobalt silver and deming drill bits set delivers exceptional heat resistance during heavy drilling. Industrial workers and machinists rely on this 8 PCS HSS cobalt silver and deming drill bits set to penetrate stainless steel, cast iron, and other hard materials.

Built For Performance

• Cobalt-infused high-speed steel construction resists high temperatures.
• Reduced 1/2-inch shanks fit standard drill presses and handheld drills.
• 135-degree split point prevents walking on hard surfaces.
• Black and gold oxide finish reduces friction for faster chip removal.
• Includes a dedicated storage case to protect cutting edges.

On-The-Job Use

• Boring large-diameter holes in structural steel plates.
• Machining custom brackets in fabrication workshops.
• Drilling through cast iron and alloy piping during repairs.

Specs At A Glance

Good To Know

Q: Should cutting fluid be used with these drill bits? A: Yes, applying cutting oil or lubricant is highly recommended to control heat and prolong the life of the cobalt steel. This is especially critical when drilling hard metals like stainless steel.

Q: Can these bits be sharpened? A: The tips can be resharpened using standard bench grinders or dedicated drill sharpener systems. Maintaining the factory 135-degree split-point angle ensures best results.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.