Guhring 9000160030140 Cobalt Drill Bit Set 25 Pc

Product Description

The GUHRING 9000160030140 is a 25-piece cobalt jobber length drill bit set designed for metalworking and multipurpose drilling applications. The set spans a size range of 0.0394 inches to 0.5118 inches in metric step increments of 0.5, making it a practical solution for shops and field technicians who need a ready-to-use range of sizes without sourcing bits individually. Each drill features a 118-degree point angle, a straight shank, and a steam oxide coating that reduces friction and helps resist corrosion during cutting operations. The bits are ground from cobalt steel, which provides improved heat and wear resistance compared to standard high-speed steel, particularly when drilling harder ferrous materials. The set ships in a metal or plastic case for organized storage and jobsite portability. Installed by machinists, maintenance technicians, pipefitters, and HVAC fabricators.

This set is suited for metalworking environments where a broad range of hole sizes is required in a single kit. Common applications include drilling mild steel, stainless steel, cast iron, and other hard metals encountered in mechanical, HVAC, plumbing, and electrical trade work. The metric sizing progression makes this set particularly well matched to shops working within metric dimensional standards. The included case keeps bits organized and protected between uses, reducing loss and damage on active job sites.

Key Features

• Cobalt steel construction for improved heat resistance and longer tool life in hard-metal drilling
• Steam oxide coating reduces friction and provides mild corrosion resistance
• 118-degree split-point angle for accurate starting without a center punch on most metals
• Straight shank compatible with standard drill chucks across common portable and bench drill platforms
• Metric step increments of 0.5 across a 0.0394 to 0.5118 inch size range in a single 25-piece set
• Right-hand cutting direction; metal or plastic storage case included

Compatibility

Designed as an OEM-specification cobalt jobber drill set for metalworking and multipurpose drilling; compatible with any standard drill chuck accepting straight-shank bits within the 0.0394 to 0.5118 inch diameter range.

Installation Notes

Drill bit installation and use should be performed by qualified machinists or trade professionals familiar with proper chuck-tightening procedures and appropriate drilling speeds for cobalt tooling on ferrous materials. Ensure the drill press or handheld driver is powered down and the chuck is fully released before changing bits. Do not exceed the recommended RPM range for the specific bit diameter and material being drilled, as overheating cobalt bits will shorten their service life. Eye protection and chip guarding consistent with applicable shop safety standards are required when drilling metal.