Drill bit Proline 70411 – metal drill, Ø 4 mm, length 110 mm, 1 pc

Proline 70411 is a single metal drill bit with a 4 mm diameter and 110 mm overall length designed for drilling through metal and similar materials. The bit is suitable for use in hand drills and drill presses and provides standard twist geometry for general-purpose metalworking, repair and assembly tasks. Its dimensions and construction make it appropriate for precision holes where a 4 mm diameter is required.

Advantages

The drill bit offers a consistent 4 mm cutting diameter and an overall length of 110 mm that allows access to deeper drilling points in sheet metal and thin structural elements. The standard twist profile supports stable cutting and chip evacuation during metalworking. Supplied as a single piece, it is simple to store and replace when worn.

Suitable for

• Drilling holes in steel, iron and other ferrous metals
• Light to medium metal fabrication and repair
• Use in hand-held drills and bench drill presses
• Creating pilot holes for tapping and assembly

Key specifications

• Drill type: metal twist drill
• Diameter: 4 mm
• Overall length: 110 mm
• Quantity: 1 piece
• Geometry: standard twist for general-purpose metalworking

How to use

Secure the drill bit in the chuck of a hand drill or drill press, ensuring correct alignment and tight clamping. Mark the drilling point on the workpiece and, if necessary, use a center punch to prevent walking. Set an appropriate rotational speed for metal drilling and apply steady feed pressure; withdraw periodically to clear chips and avoid overheating. Use cutting fluid for improved life and performance when drilling harder metals.

Usage recommendations

For best results when drilling metal, use moderate speed and light, steady pressure, apply cutting fluid for harder alloys, and replace the bit once cutting performance declines to maintain hole quality.