IRWIN IW4041010 Blue Groove 4X Flat Bit Set 8 Piece

Irwin IW4041010 Blue Groove 4X flat wood bit set (8 piece, 152mm)

Irwin IW4041010 Blue Groove 4X flat bits are designed for fast, controlled drilling in timber, making this flat wood bit set a practical choice for trades and DIYers who want cleaner holes with efficient chip removal.

This 8 piece set covers a useful spread of common diameters for first-fix and second-fix tasks. The IW4041010 set uses a 1/4" hex shank to help reduce slipping in the chuck during drilling.

Key Features

• Blue Groove point & cutting edge: Designed to cut rather than scrape the timber for faster drilling performance.
• Double cutting spurs: Scribe the outside of the hole to help reduce breakout for a cleaner finish.
• Parabolic scoop: Helps optimise control and clear wood chips efficiently as you drill.
• Increased relief angle: Designed with a 17° relief angle to support fast cutting.
• 1/4" hex shank: Helps reduce bit slipping in the drill chuck for more consistent driving.
• Durable shank design: 152mm shank length with a larger diameter design for added durability.

Specifications at a glance

Suitable applications

• Drilling through-holes in timber for general joinery, carpentry and site work.
• Running cable and pipework routes through studs and joists (where an appropriate diameter is required).
• Fast roughing-out holes where clean entry and reduced breakout are important.