Drill bit Proline 91221 — metal, Ø12 mm, length 210 mm, 1 pc

Proline 91221 is a single metal drill bit with a 12 mm diameter and a total length of 210 mm, supplied as one piece. Designed for drilling metal and similar materials, this straight-shank bit fits compatible handheld drills and drill presses. It is intended for repair, fabrication and general metalworking tasks where a mid-size, durable drill bit is required.

Advantages

The Proline 91221 drill bit features a construction aimed at stable, centered drilling and extended service life. Its geometry supports accurate hole positioning and efficient chip evacuation, while the straight shank ensures secure clamping in common chucks. Supplied as a single unit, it provides a straightforward replacement or addition to existing drill sets for mid-size holes in metal.

Suitable for

• Drilling holes in steel and other metals
• Repair and maintenance work requiring Ø12 mm holes
• Fabrication tasks on metal components
• Use with compatible handheld drills and drill presses

Key specifications

• Diameter: 12 mm
• Total length: 210 mm
• Shank type: straight shank for standard chucks
• Material application: metal and similar materials
• Quantity: 1 piece

How to use

Secure the Proline 91221 drill bit in a compatible drill chuck, ensuring the shank is fully inserted and tightened. Select an appropriate rotational speed and cutting fluid for the metal being drilled to reduce heat and wear. Begin drilling with steady pressure, maintaining alignment to keep the drill centered and allow chips to clear. After use, clean the bit and store it in a dry place to prevent corrosion.

Usage recommendations

For best results when drilling metal, use a suitable cutting lubricant, moderate feed pressure, and lower speeds for harder materials. Inspect the bit regularly for wear and replace when cutting performance declines.