Drill bit Irwin 10506622 — lip drill bit, diameter 2 cm, 1 pc

Irwin 10506622 is a lip drill bit with a 20 mm diameter designed for drilling clear, straight holes in wood. The bit integrates cutting spurs and a full screw tip to improve entry and reduce breakout, while a tapered flute and tri-flute geometry support faster chip ejection and reduced binding. The tool is supplied as a single piece and has full-length heat treatment for enhanced durability, making it suitable for workshop and maintenance tasks that require consistent, clean round holes.

Advantages

The lip drill geometry and cutting spurs produce cleaner hole edges with minimal breakout on the exit face. The full screw tip assists in pulling the bit through the workpiece for easier drilling and improved centring. Tapered flute and tri-flute design reduce chip clogging and promote efficient removal of wood chips, while full-length heat treatment increases wear resistance and extends service life under regular use.

Suitable for

• Drilling clean round holes in soft and hardwoods
• Workshop carpentry and joinery tasks
• Maintenance and repair jobs requiring precise thru-holes
• Creating holes for dowels, bushings or cable passes

Key specifications

• Type: lip drill bit
• Diameter: 20 mm
• Total length: 165 mm
• Intended material: wood
• Package quantity: 1 piece
• Features: cutting spurs, full screw tip, tapered flute, tri-flute chip ejection, full-length heat treatment

How to use

Mount the Irwin lip drill bit securely in a compatible drill chuck, ensuring correct centring and firm clamping. Start drilling at low speed to allow the full screw tip and cutting spurs to establish the entry point, then increase speed as appropriate for the wood type. Apply steady, even pressure without forcing the bit; allow the screw tip to pull the bit through. For through-holes, reduce speed when approaching the exit face to minimise breakout.

Usage recommendations

Use with sharp, correctly set drill chucks and appropriate drill speeds for the wood species. Clear chips periodically for continuous chip ejection and cooler cutting. For best results, clamp workpieces securely and consider backing the exit side with sacrificial material to prevent tear-out when drilling through thin panels.