Drill bit Proline 92021, metal, Ø20 mm, length 210 mm, 1 pc

Proline 92021 metal drill bit, Ø20 mm and 210 mm overall length, is a single-piece cutting tool intended for drilling metal and other hard materials. The bit is designed as a long-reach drill for through-holes and deep drilling tasks and is compatible with standard drill chucks used in workshop, repair and construction environments. The tool combines a solid cutting geometry with a doubled twist flute to facilitate chip evacuation and maintain drilling stability during extended penetration.

Advantages

The Proline 92021 offers a 20 mm diameter drill point with a 210 mm overall length that enables access to deeper holes without the need for extensions. The single-piece design ensures rigid performance and reduced runout. A specially shaped cutting insert improves durability and centered drilling, while the double-twist flute supports quicker chip removal to reduce heat and loading at the cutting edge. Compatibility with standard chucks makes the bit easy to fit on common drills.

Suitable for

• Drilling through metal plates and structural steel
• Deep-hole drilling in workshop and repair tasks
• Construction-site drilling where long-reach bits are required
• Applications requiring accurate centered holes and steady feed

Key specifications

• Diameter: 20 mm
• Overall length: 210 mm
• Material application: metal and similar hard materials
• Design: single-piece long-reach drill with doubled twist flute
• Compatibility: standard drill chucks

How to use

Secure the Proline 92021 in a compatible drill chuck and ensure the bit is tightened properly before operation. Mark the drilling position and use a center punch on metal surfaces if precise centering is required. Operate the drill at an appropriate speed and feed for metal drilling to avoid overheating; apply steady pressure and allow the double-twist flute to evacuate chips. For deep holes, periodically withdraw the bit to clear chips and coolant if used. Inspect the cutting edge regularly and replace the bit if wear or damage is observed.

Usage recommendations

Use cutting fluid or coolant when drilling steel or other hard metals to extend tool life and improve hole quality. Start at a lower speed when centering and increase to a suitable metal-drilling speed once the hole is established. Avoid excessive lateral forces to maintain accurate centered drilling.