Replaces IW10506628Irwin IW4042202 Speedbor Blue Groove Wood Drill Bit x6 Pc Set IRWIN® SPEEDBOR Blue Groove 6X Wood Drill Bits are ideal for drilling wood and offer 6x faster drilling penetration than a standard flat bit. Their Tri-Flute design allows for faster chip ejection and their full screw tips ensure ease of use and pull through. The cutting spurs produce clean holes with minimal break out and the tapered flute reduces binding. The drill bits are also heat-treated for extra durability. FEATURES Tapered flute for less binding and ease of use Cutting spurs – for clean holes with minimal breakout Tri-Flute design for faster chip ejection Full length heat treated for extra durability Compact 165mm length designed to fit between studs in most common applications 1/4” Quick change shank for easy removal & replace CONTENTS 1x 16mm Bit 1x 18mm Bit 1x 20mm Bit 1x 22mm Bit 1x 25mm Bit 1x 32mm Bit 1x Carry Case