Drill bit set MILWAUKEE HSS-G TiN for metal, 12.0 mm, 5 pcs

MILWAUKEE HSS-G TiN metal drill bit set contains five 12.0 mm high-speed steel (HSS) twist drills with a titanium nitride (TiN) coating. These bits are designed for cutting holes in steel and a range of ferrous and non-ferrous metals. The TiN surface treatment reduces friction and improves wear resistance compared with uncoated HSS, extending service life in workshop, maintenance and construction applications. The set is suitable for use in hand-held drills as well as drill presses.

Advantages

The TiN coating on these HSS-G bits increases edge hardness and reduces heat buildup during drilling, which helps preserve cutting geometry and prolongs tool life. The 12.0 mm diameter provides a consistent hole size for tasks that require medium-diameter metal drilling. Manufactured to deliver straight drilling performance, the bits are compatible with standard drill chucks and are suited for repeated use in metalworking environments.

Suitable for

• Drilling holes in mild and medium-strength steel
• Drilling non-ferrous metals such as aluminium, brass and copper
• Workshop repairs, maintenance and mechanical assemblies
• Use with corded and cordless hand drills and drill presses

When it may not be suitable

These HSS-G TiN bits are intended for general metal drilling and are not optimized for drilling hardened steels, stainless steels with high hardness, or abrasive composites. For applications requiring very high precision or extremely long life under continuous heavy production loads, carbide or coated carbide specialty drills may be more appropriate.

Key specifications

• Drill type: twist drill (HSS-G) with titanium nitride (TiN) coating
• Material compatibility: ferrous and non-ferrous metals
• Diameter: 12.0 mm
• Quantity: 5 pieces
• Intended use: hand drills and drill presses

How to use

Select an appropriate drill speed for the material being worked—lower speeds for harder metals and higher speeds for softer non-ferrous metals—apply steady feed pressure, and use cutting fluid where recommended to reduce heat and improve chip evacuation. Secure the workpiece before drilling and ensure the drill bit is firmly clamped in the chuck. Periodically withdraw the bit to clear chips and allow cooling during longer holes or heavier cuts.

What to consider before purchase

• Whether a 12.0 mm diameter meets your hole-size requirements
• Compatibility with your drill chuck and drilling equipment
• Materials you will drill most often (hardened steels may need different bits)
• Preference for coated HSS versus carbide for longevity and cost

Usage recommendations

Use cutting fluid when drilling steel, maintain appropriate speeds and feed rates, and replace bits that show significant wear or chipping to ensure consistent hole quality and tool safety.