Drill bit Proline 91021 — metal, Ø 10 mm, length 210 mm, 1 pc

Proline 91021 metal drill bit is a single-piece cutting tool with a 10 mm diameter and 210 mm overall length, intended for drilling metal and similar hard materials. The straight shank design fits handheld drills and drill presses, allowing use in through-hole drilling and preparatory metalwork in fabrication, repair and construction tasks. The bit is produced for professional and industrial applications and features a specially shaped solid carbide insert that improves durability and drilling accuracy.

Advantages

The carbide insert and solid construction provide increased wear resistance and consistent performance during extended use. Accurate centered drilling reduces wobble and helps achieve precise hole placement. The 210 mm overall length offers deeper reach than standard short bits while the straight shank ensures compatibility with common chucks. The bit is supplied as a single piece for easy selection and installation.

Suitable for

• Drilling through metal sheets, plates and structural components
• Preparation of holes for bolts, rivets and fasteners
• Use with handheld drills and drill presses in workshops
• Repair, maintenance and light fabrication tasks

Key specifications

• Material suitability: metal and similar hard materials
• Cutting tip: specially shaped solid carbide insert for increased durability
• Diameter: 10 mm
• Overall length: 210 mm
• Shank type: straight shank compatible with standard chucks
• Pack quantity: 1 piece

How to use

Secure the drill bit in the chuck of a handheld drill or drill press, ensuring the straight shank is clamped firmly. Select an appropriate drilling speed for the metal type and apply steady pressure without forcing the bit. For clean holes and extended tool life, use cutting fluid or coolant when drilling thicker or harder metals. Clear chips from the hole periodically to prevent clogging and overheating.

Usage recommendations

Maintain appropriate drill speed and use cutting fluid for best results; inspect the carbide insert for wear and replace the bit if cutting performance degrades.