Whiteside UDFT2100 Flush Trim Spiral Bit Up/Down Cut 1/4" SH, 1/4"CD, 1"CL delivers state-of-the-art results in flush trimming with its solid carbide construction and innovative design. This bit features up cut and down cut flutes tipped with a double ball bearing guide, creating a compression cut that effectively prevents fraying and splintering. The 2+2 compression spiral design reduces sanding time by saving you effort and enhancing the finish on your project edges. With a 1/4" cutting diameter, 1/4" shank, and 1" cutting length, this bit is for precise, clean flush trim cuts on hardwoods, softwoods, laminates, and plywoods. It combines the benefits of up cut and down cut edges in one tool, functioning like two separate bits. I for following templates, duplicating shapes, and crafting intricate designs, especially when used on a router table with the template positioned above the workpiece. The double bearings provide enhanced stability and reduce strain, making it compatible with both hand routers and router tables for versatile woodworking applications. RPM range is 18,000-20,000, with a maximum of 24,000 for optimal performance. Model Number: UDFT2100