Whiteside Spiral Up / Downcut Bit, 1/2 in. SH x 1/2 in. CD x 1-5/8 in. CL is a high-quality router bit designed for precision and smoothness. Known as the UD5163 or 3 + 3 Compression bit, it features a unique combination of up and down cut spirals that effectively eliminate chipping when trimming double-sided laminates and veneers. The three-fluted spiral profile ensures the smoothest cuts, making it i for detailed woodworking projects. Crafted from solid carbide, this bit durability and long-lasting performance. It is manufactured by Whiteside Machine Company, located in Claremont, North Carolina. Specifications include a 1/2 inch shank size, 1/2 inch cutting diameter, and 1-5/8 inch cutting length, providing versatility and precision in your routing tasks. Model Number: UD5163