Robert Bosch Tool Group CO14 Cobalt Drill Bit Set 14pc

Product Description

The ROBERT BOSCH TOOL GROUP CO14 is a 14-piece cobalt metal drill bit set engineered for drilling into hard and abrasive materials. Cobalt construction allows the bits to withstand very high drilling temperatures, making them well-suited for work in stainless steel and other tough metals. The set includes a no-skate tip for clean, accurate starts and high-visibility diameter markings on each bit. Bits 3/16 inches and larger feature a 3-flat shank design for improved grip in the chuck. This set is used by electricians, plumbers, HVAC technicians, and general contractors who regularly drill through metal in the field or shop.

This bit set covers a wide range of common metal-drilling applications across residential and commercial jobsites. The included sizes span from 1/16 inch up to 1/2 inch, giving technicians the range needed for conduit knockouts, anchor holes, sheet metal work, and structural fastener prep. The cobalt material composition makes these bits a practical choice when high-speed steel bits are not sufficient for the material hardness encountered on the job.

Key Features

• Cobalt construction for drilling in hard and abrasive metals including stainless steel
• Designed to perform at very high drilling temperatures without degradation
• No-skate tip for clean, accurate bit starts without center-punching
• 3-flat shank on bits 3/16 inches and larger for improved chuck grip and reduced slippage
• High-visibility diameter markings on each bit for quick size identification
• 14-piece set covers 1/16 inch through 1/2 inch in common fractional sizes

Compatibility

Designed for use with standard 3-jaw keyed or keyless drill chucks accepting round and 3-flat shanks. Suitable for corded and cordless drills used in metal fabrication, HVAC, electrical, and plumbing trade applications.

Installation Notes

Cobalt drill bits should be installed and used by qualified tradespeople familiar with metal-drilling procedures. Secure the workpiece before drilling and use appropriate cutting fluid or lubricant when drilling stainless steel or hardened alloys to extend bit life. Always wear eye protection. Inspect each bit for wear or damage before use and replace any bit showing signs of heat discoloration or tip degradation.