This solid carbide down cut trim router bit has a cutting length of 5/8 in. and a diameter of 1/4 in. The overall length is 2-1/2 in. with a 1/4 in. shank. This solid carbide flush trim router bit is designed to provide precise, efficient cuts and offers extreme durability. The spiral design largely reduces chipping. For use with soft and hard woods, ply-woods, composites, laminates, plastics and some non-ferrous metals. The 2 independent ball bearings at the tip ensure smooth running. 1/4 in. shank. Solid carbide flush trim bits significantly outperform standard flush trim router bits and excel where standard flush trim bits are lacking producing extremely smooth finished surfaces on some of the most demanding materials and applications. The solid carbide construction allows complex blade geometry and the welded steel tip accommodates a threaded lock nut for ease of use and reliability. These bits perform well on all types of woods including, plywood, MDF, solid woods, plastic laminates and non-ferrous metals.