Drill bit Irwin Lip drill bit 1.2 cm 1 pc

Irwin Lip drill bit 1.2 cm is a single-piece, general-purpose cutting tool designed for use with standard drills. With a 1.2 cm diameter and a centre point tip, the bit provides accurate starts and consistent hole placement for woodworking, construction and repair jobs. The fully hardened body increases wear resistance while the spurred cutting head and wide flutes help produce clean holes and efficient chip evacuation.

Advantages

The centre point ensures easy and accurate starts, reducing the tendency to walk on the workpiece. The fully hardened drill body improves durability and extends service life under repeated use. The spurred cutting head minimises splintering and creates smooth hole edges in wood and similar materials. Wide flutes enable fast removal of chips, keeping the cutting edge clear and maintaining drilling speed.

Suitable for

• Drilling 1.2 cm diameter holes in wood and wood-based materials
• General repair and maintenance tasks requiring a single precision hole
• Construction site work where a durable, wear-resistant bit is needed
• Carpentry and joinery tasks demanding clean, splinter-free hole edges

Key specifications

• Diameter: 1.2 cm
• Construction: single-piece, fully hardened body
• Tip type: centre point for accurate starts
• Cutting head: spurred design to reduce splintering
• Flutes: wide flutes for efficient chip evacuation

How to use

Secure the drill bit in the chuck of a standard powered drill, ensuring it is centred and tightly fastened. Mark the drilling point on the workpiece, then position the centre point on the mark and start drilling at low speed to establish the initial contact. Increase speed steadily while applying consistent axial pressure until the bit passes through the material. Withdraw the bit periodically if drilling deep holes to clear accumulated chips and reduce heat build-up.

Usage recommendations

Use appropriate drilling speeds and moderate pressure for the material being worked; reduce speed when drilling harder or laminated surfaces to prevent overheating. For best results in woodworking, back the workpiece or use sacrificial backing to avoid blowout on the exit side. Inspect the bit for wear before use and replace when cutting performance declines.