Drill bit Proline 91230, metal, Ø12 mm, length 300 mm, 1 pc

Single Proline 91230 metal drill bit with 12 mm diameter and 300 mm overall length, supplied as one piece. The bit is designed for drilling metals and other hard materials in fabrication, maintenance and installation tasks. It features a straight shank intended for use in compatible hand drills and drill stands to produce precise, centered holes.

Advantages

The Proline 91230 drill bit offers improved durability and accurate centered drilling thanks to its specially shaped solid carbide insert and optimized flute geometry. Its construction provides effective chip evacuation and reduced loading during continuous drilling operations. Supplied as a single unit, the bit is easy to install and replace in a wide range of drilling setups.

Suitable for (tasks / use cases)

• Drilling holes in metal sheets and structural steel
• Fabrication and repair work in workshops
• Installation of fasteners and through-holes in mechanical assemblies

Key specifications

• Diameter: 12 mm
• Overall length: 300 mm
• Quantity: 1 piece
• Shaft type: straight shank
• Tip material: solid carbide insert for improved wear resistance
• Flute type: double twist for faster chip removal

How to use

Secure the drill bit in a compatible chuck ensuring correct centring and firm clamping. Select an appropriate drilling speed and apply steady pressure to allow the carbide tip to cut efficiently; use cutting fluid when drilling metals to extend tool life and improve hole quality. Withdraw periodically to clear chips if drilling deep holes and inspect the bit for wear before reuse.

Usage recommendations

Use appropriate personal protective equipment, clamp workpieces securely, and match drill speed and coolant to the material being drilled. Replace the bit when signs of excessive wear or chipping appear to maintain hole accuracy and safety.