Drill Bit Set Irwin Blue Groove for Wood 5 pcs — diameters 6, 16, 18, 20, 22, 25 mm

Irwin Blue Groove wood drill bit set contains five high-performance bits designed for clean, precise drilling in timber and wood-based materials. The set covers a selection of commonly used diameters for joinery and carpentry tasks and is intended for use with standard drill chucks. Practical for both workshop and on-site work, these bits provide a balance of cutting speed and hole quality for general woodworking applications.

Advantages

The Blue Groove design improves chip evacuation and reduces heat build-up during drilling, helping to maintain cutting performance over extended use. Each bit is ground to produce clean hole edges and straight walls, which simplifies assembly and finishing operations. The set format gives quick access to multiple diameters without needing individual purchases, making it efficient for varied woodworking tasks.

Suitable for

• Drilling holes in softwood and hardwood for furniture assembly
• Creating accurate openings for dowels and fasteners in joinery
• On-site carpentry and repair work requiring several hole sizes

Key specifications

• Material: high-speed steel suitable for wood drilling
• Number of pieces: 5
• Included diameters: 6 mm, 16 mm, 18 mm, 20 mm, 22 mm, 25 mm
• Shank type: straight shank for standard drill chucks
• Intended use: wood and wood-based materials

How to use

Secure the chosen bit in the drill chuck and tighten firmly. Mark and, if necessary, center-punch the drilling point to prevent wandering. Start drilling at low speed to establish the hole, then increase speed as appropriate for the material and bit diameter. Use steady pressure and avoid forcing the bit; allow the cutter to remove material at its own rate. Periodically withdraw the bit to clear chips from the hole and maintain cutting efficiency.

Usage recommendations

Use appropriate personal protective equipment such as eye protection and hearing protection during drilling. For prolonged drilling or large-diameter holes, intermittently withdraw the bit to clear chips and reduce heat. When working with hardwoods, select slower speeds and steady feed to preserve bit life and hole quality.