Drill bit Proline 71821 — metal drill bit, Ø 18 mm, length 210 mm, 1 pc

Proline 71821 is a single metal drill bit with an 18 mm diameter and 210 mm overall length. Designed for drilling metal, it features a straight shank and a cutting tip compatible with drill presses and handheld drills. Supplied as one piece, this metal drill bit is intended for through-holes, fabrication and maintenance operations in workshop and industrial environments.

Advantages

The Proline 71821 metal drill bit offers stable drilling performance in metal materials thanks to its 18 mm diameter and extended 210 mm length that reach deeper workpieces. The straight shank ensures secure clamping in standard chucks, while the single-piece design reduces the risk of joint failure. Its geometry is optimized for metal cutting, providing consistent chip evacuation and accurate hole sizing when used with appropriate speeds and lubrication.

Suitable for

• Drilling through-holes in steel plates and metal sheets
• Fabrication and assembly work in workshops and maintenance shops
• Use with drill presses and handheld electric drills
• Repair and retrofit tasks requiring precise metal holes

Key specifications

• Diameter: 18 mm
• Overall length: 210 mm
• Material application: metal
• Shank type: straight shank
• Package quantity: 1 piece

How to use

Secure the Proline 71821 drill bit in the chuck of a drill press or handheld drill, ensuring the straight shank is properly clamped. Select an appropriate drilling speed and use cutting fluid or lubricant when drilling harder metals to extend tool life and improve chip evacuation. Start with a pilot hole if drilling large or thick workpieces, apply steady pressure without forcing the bit, and clear chips frequently to avoid clogging. After use, clean and store the drill bit in a dry place to prevent corrosion.

Usage recommendations

For best results when drilling steel and other ferrous metals, use suitable cutting fluid, moderate speeds, and firm clamping. When drilling deep holes, periodically withdraw the bit to remove chips and reduce heat build-up.