Drill bit Proline 92440 — 24 mm diameter, 400 mm length, single piece

Proline 92440 single-piece metal drill bit, 24 mm diameter and 400 mm overall length, designed for precise drilling in metal and compatible materials. The solid single-piece construction provides stability and a long reach for applications where access is limited. This drill bit is suitable for through-holes, mounting operations and other metalworking tasks that require an accurate 24 mm hole, and it can be used in both hand drills and drill presses.

Advantages

The one-piece design minimizes wobble and increases rigidity for cleaner, more accurate holes. A specially shaped solid carbide insert enhances durability and maintains cutting performance under load, resulting in consistent hole quality. The extended 400 mm length enables deep or hard-to-reach drilling without additional extensions, while the 24 mm diameter offers compatibility with standard fasteners and mounting hardware. Double twist geometry facilitates efficient chip evacuation and reduces binding during drilling.

Suitable for

• Drilling through metal sheets and plates
• Mounting and assembly tasks requiring precise 24 mm holes
• Work in drill presses and hand-held drills where extra reach is needed
• Metalworking operations in workshops and production environments

Key specifications

• Diameter: 24 mm
• Overall length: 400 mm
• Construction: single-piece solid design with carbide insert
• Intended materials: metal and compatible workpieces
• Tip/geometry: double twist for improved chip evacuation

How to use

Select appropriate drill speed and feed rate for the specific metal being drilled and secure the workpiece before starting. Fit the drill bit securely in the chuck of a hand drill or drill press, ensuring correct alignment. Apply steady, moderate pressure and allow the cutting edges to do the work; avoid excessive force that can cause overheating or premature wear. Periodically withdraw the bit to clear chips and maintain cooling, and use cutting fluid where appropriate to extend tool life and improve finish.

Usage recommendations

Use appropriate personal protective equipment, clamp workpieces securely, and match drill speed and lubricant to the metal type. Inspect the bit for wear before use, and replace when cutting performance or hole quality deteriorates.