The Irwin 1" x 4" Long Spade Paddle Flat Drill Bit Speedbor Impact 87916 is designed for fast and efficient wood drilling. This high-performance spade bit features a patented Blue-Groove? cutting edge that allows for aggressive removal of wood chips, ensuring faster drilling and cleaner holes. The chamfered cutting edges increase durability, while the 4-inch length provides excellent control for shallow drilling applications. Ideal for use with impact drivers, this spade bit is perfect for both professional contractors and DIY enthusiasts. Features Patented Blue-Groove? Cutting Edge: Ensures faster chip removal and drilling speed. Chamfered Cutting Edges: Increases durability and reduces splintering. 4-Inch Length: Provides excellent control for shallow drilling applications. Impact Rated Shank: Designed for use with impact drivers for enhanced versatility. Durable Construction: Made from high-quality steel for long-lasting performance. Optimized Point Tip: Minimizes splintering and controls speed for cleaner holes. Specifications Brand: Irwin Model Number: 87916 Diameter: 1 inch Length: 4 inches Material: Steel Shank Type: 1/4-inch impact rated Weight: 1.44 ounces UPC: 024721879165