As the name implies, Whiteside's Hercules Max Life spiral router bits are designed for heavy-duty work loads. These solid carbide bits are engineered for longer bit life on high-wear applications, and are ideal for long production runs in MDF and laminate. The HC5122 Hercules Max Life Up/Down (Compression) Cut Spiral Router Bit specifications include a 1/2" shank diameter; a 1/2" cutting diameter; and a 1-1/4" cutting length. The bit is 3" in length overall. The up/down spiral bit is designed with an up-cut tip and a down-cut spiral on the shank. This combination creates a compression cut that prevents fraying and splintering, ideal for applications such as stock that has A-grade veneers on both sides, where you want a clean edge on the top, bottom, and middle. By lining up the bit just right, you can get a superior edge across the entire thickness of the wood. Family-owned and operated, Whiteside Machine Company has spent over 40 years designing and manufacturing woodworking products and takes great pride in their quality, innovation, and commitment to customer satisfaction. As with all Whiteside products, these bits are and are warranted against defects in workmanship and materials.