Drill Bit Proedge Milwaukee HSS-G 19.5 mm – single piece, metal drilling

Proedge Milwaukee HSS-G 19.5 mm drill bit for metal is a single high-speed steel cutting tool designed for accurate drilling of ferrous materials. The bit’s HSS-G construction gives a balance of hardness and heat resistance suitable for drilling steel, cast iron and other metal surfaces in workshop, construction and maintenance settings. Supplied as a single piece, this 19.5 mm diameter bit is intended for use in handheld drills and drill presses where a precise round hole of this size is required.

Advantages

The HSS-G material delivers robust cutting performance and improved wear resistance compared with low-alloy bits, allowing for longer run times under moderate drilling loads. The single-piece design reduces the number of weak joints and provides consistent concentricity for cleaner holes. Heat resistance of the high-speed steel reduces the risk of premature softening during continuous drilling in metal, while the 19.5 mm diameter meets specific sizing needs without relying on step-drilling or reaming for many applications.

Suitable for

• Drilling through mild and medium carbon steel
• Making precise 19.5 mm holes in metal workpieces
• Use in workshop drills and drill presses
• Maintenance and repair tasks requiring metal penetration

Key specifications

• Material: High-speed steel (HSS-G)
• Diameter: 19.5 mm
• Design: Single-piece twist drill
• Intended use: Metal drilling (ferrous materials)
• Compatible tools: Handheld electric drills and drill presses

How to use

Secure the workpiece with clamps or a vise to prevent movement. Select an appropriate drill with a chuck that accepts a 19.5 mm shank or use a suitable adapter. Use cutting fluid or coolant to reduce heat and extend tool life when drilling steel. Start at low speed to establish a centered entry, then increase speed moderately while applying steady pressure. Withdraw the bit periodically to clear chips and allow cooling. After drilling, deburr the hole as required for the application.

Usage recommendations

For best results, use appropriate cutting lubricant, maintain correct feed and speed for carbon steels, and avoid excessive side load. Replace the bit if wear or chipping appears to maintain hole quality and operator safety.