Whiteside Spiral Up / Downcut Bit, 1/2 in. SH x 1/2 in. CD x 1-3/8 in. CL is a high-quality router bit designed for precision and smoothness. Also known as the 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 spiral profile ensures extra smooth cuts, making it i for detailed woodworking projects. With a 1/2 inch shank and 3 flutes, this solid carbide bit delivers ultra-smooth results and long-lasting durability. Manufactured by Whiteside Machine Company in Claremont, North Carolina, it is built to meet professional standards. Specifications include a 1/2 inch shank size, 1/2 inch cutting diameter, and 1-3/8 inch cutting length. Model Number: UD5143