Drill bit Proline 16 mm x 350 mm model 91635, metal, 1 pc

Proline 16 mm x 350 mm model 91635 is a single-piece metal drill bit intended for professional and industrial applications. With a 16 mm diameter and 350 mm overall length, this drill bit provides extended reach for deeper holes in metal and similar hard materials. The design includes a specially shaped solid carbide insert to increase durability and improve centring, and a double-twist flute geometry for efficient chip evacuation and faster bore release. Supplied as a single unit, the bit is compatible with standard drill chucks and holders that accept its shank type and diameter.

Advantages

The specially shaped solid carbide insert enhances wear resistance and maintains cutting performance over extended use, resulting in more accurate centered drilling. Double twist flutes improve chip removal and reduce cutting load, which contributes to consistent drilling speed and reduced risk of jamming. The extended 350 mm length allows access to deeper drilling points while the 16 mm diameter provides a balance between hole size and structural rigidity.

Suitable for

• Drilling holes in metal plates and profiles
• Workshop and maintenance tasks requiring deeper penetration
• Construction jobs where stable, straight holes in hard materials are needed

Key specifications

• Diameter: 16 mm
• Overall length: 350 mm
• Material: solid metal body with solid carbide insert
• Geometry: double-twist flute for chip evacuation
• Quantity: 1 piece

How to use

Secure the drill bit in a compatible chuck or holder rated for the bit diameter and length. Use appropriate cutting speeds and feed rates for the material being drilled and ensure adequate clamping of the workpiece. For best results when drilling hard materials, apply steady pressure without forcing the bit and allow the carbide insert to do the cutting. Clear chips frequently to avoid clogging the flutes and overheating the bit.

Usage recommendations

Use cutting fluid or coolant when drilling metals to extend tool life and improve hole quality. Check chuck tightness regularly during extended operations and replace the bit if excessive wear or chipping of the carbide insert is observed.