IRWIN SPEEDBOR Spade Bit – Impact Rated Wood Drilling Bit Get faster, cleaner drilling with the IRWIN SPEEDBOR Spade Bit, designed for aggressive wood cutting and improved durability. The next-generation SPEEDBOR design delivers up to 2X faster drilling and 2X longer life compared with the previous generation of IRWIN SPEEDBOR spade bits. A chamfered cutting edge improves durability, while the wider, longer point tip provides better control and helps minimize splintering. IRWIN's patented Blue-Groove parabolic cutting edge quickly clears wood chips from the hole for faster, more efficient drilling. The 1/4" impact-rated shank is designed for use with impact drivers, making this a great choice for construction, woodworking, remodeling, and other wood-drilling applications. Key Features Drills holes up to 2X faster for quicker job completion Provides up to 2X longer life Chamfered cutting edges increase durability Patented Blue-Groove parabolic scoop provides fast chip removal Wider, longer point tip improves control and helps reduce splintering Aggressive cutting design for fast wood removal 1/4" impact-rated shank Designed for use with impact drivers Ideal for drilling holes through clean wood