Drill bit Proline 90411 — metal, Ø 4 mm, length 110 mm, 1 pc

Proline 90411 is a single metal drill bit with a 4 mm diameter and an overall length of 110 mm. Manufactured for drilling metal, this drill bit is suitable for use in hand drills and drill presses for light to medium duties. It is intended for tasks requiring a precise Ø 4 mm hole in metal components during metal fabrication, maintenance, fastener installation and general DIY repairs.

Advantages

The Proline 90411 drill bit offers precise centered drilling and consistent hole diameter for repeatable results. Its 110 mm overall length provides extended reach compared with shorter bits, while the 4 mm diameter delivers accurate, small-diameter holes. Supplied as a single piece, it is convenient for replacing worn tools or stocking a specific size for routine work. The design supports effective chip evacuation during metal drilling and is compatible with common hand and machine drilling equipment.

Suitable for

• Drilling holes in sheet metal and light structural metalwork
• Installing small fasteners and rivets that require a Ø 4 mm hole
• Maintenance and repair tasks on machinery and equipment
• DIY projects involving precise small-diameter metal holes

Key specifications

• Material application: metal
• Diameter: 4 mm
• Overall length: 110 mm
• Pack quantity: 1 piece
• Compatible with: hand drills and drill presses for light to medium duties

How to use

Select an appropriate drill speed for the metal type being drilled and secure the workpiece firmly. Fit the Proline 90411 drill bit into the drill chuck and ensure it is centered and tightened. Use cutting oil or lubricant where appropriate to reduce heat and extend tool life. Apply steady, moderate pressure; allow the bit to cut without excessive force. Retract periodically to clear chips and maintain hole quality. After use, clean and store the bit to prevent corrosion and damage.

Usage recommendations

For best results when drilling metal, use appropriate lubrication, moderate drill speeds, and steady feed pressure. Match drilling speed and lubricant to the specific metal (softer metals require higher speed; harder metals require lower speed and more lubrication). Inspect the bit before use and replace if worn or damaged to maintain hole accuracy and reduce risk to the workpiece and tool.

Keywords: Proline 90411, drill bit, 4 mm, 110 mm, metal drill bit, Ø 4 mm, drill for metal, hand drill, drill press.