Precision Twist Drill 5995600 Cobalt Drill Bit Set 114pc

Product Description

The PRECISION TWIST DRILL 5995600 is a 114-piece cobalt jobber length drill bit set covering wire gauge sizes #60 through #1 and fractional sizes from 1/16 inch to 1/2 inch. Each bit is manufactured from cobalt high-speed steel with a gold finish and features a 135-degree split-point tip for fast penetration and reduced walking on hard surfaces. The straight shank design is compatible with standard drill chucks. This set is built for metalworking professionals and general-purpose trade use, including HVAC, plumbing, and electrical tradespeople who regularly drill into steel, cast iron, stainless, and other tough materials on the job site or in the shop.

This set is suited for residential and commercial metalworking applications where a wide range of hole sizes is required in a single kit. The cobalt construction makes these bits appropriate for drilling harder alloys and materials that would wear down standard high-speed steel bits quickly. The metal storage case keeps the full range of 114 bits organized and protected between jobs, making it practical for service vans and shop benches alike. Series designations covered include 2ACO, R10CO, and R18CO.

Key Features

• 114-piece set covers wire gauge sizes #60 to #1 and fractional sizes 1/16 inch to 1/2 inch in a single kit
• Cobalt high-speed steel construction handles hard metals including stainless steel and high-alloy materials
• 135-degree split-point tip reduces walking and requires no center punch on most surfaces
• Gold finish for corrosion resistance and visual identification of cobalt grade
• Straight shank fits standard 3-jaw drill chucks without adapters
• Metal storage case organizes all 114 bits and protects cutting edges during transport and storage
• Meets ANSI and NAS 907 specification standards for jobber length drill bits

Compatibility

Designed as a general-purpose metalworking drill bit set compatible with standard straight-shank drill chucks. Series 2ACO, R10CO, and R18CO bits are included. Suitable for use in benchtop drill presses, handheld power drills, and drill press machines accepting straight shank tooling in the covered size range.

Installation Notes

Installation of drill bits should be performed by the appropriate trade professional or qualified operator following standard shop safety practices. Secure the workpiece firmly before drilling and confirm the chuck is tightened fully before operation. When drilling hard alloys with cobalt bits, use appropriate cutting fluid to extend bit life and manage heat buildup. Inspect each bit for wear or damage before use and replace any bit showing chipped or dull cutting edges.