The Dewalt Tri-Flute 6x 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. DeWalt's Extreme series have the been designed on the Irwin Blue Groove bits with the added benefit of being impact rated with 1/4" hex shanks, making them suitable for use in impact drivers as well as all standard drills with a jawed chuck. 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. These stubby drill bits are 10cm (4in) long, making them ideal for drilling through joists or in enclosed areas. Suitable for holes up to 5cm (2in) deep. This 6 Piece Stubby Dewalt Wood Bit Set ideal for drilling wood and offer 6 times 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 tampered flute reduces binding. The drill bits are also heat treated for extra durability. Self Feed Tri-Flute Drill Bits are designed for all types of general wood drilling. Ideal for electricians, carpenters, plumbers and other professionals. Key Features 3 CUTTING EDGES - Up to 6 X faster cutting (vs Standard Flat Bits) combined with Tri-Flute Design for optimum chip removal. 3 CUTTING SPURS - Provides cleaner holes and reduced �break out�. QUICK CONNECT HEX SHANK - Prevents spinning in chuck fits all standard Quick-Change extensions and �� hex bit adapters SCREW POINT- Self�feeding screw point for easy and comfortable drilling. TAPERED FLUTE DESIGN - Tapered flute design reduces binding = smoother drilling. Benefits Impact rated: suitable for use with impact drivers Quick-change 1/4" hex shanks suitable for use