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. This router bit set includes 1 upcut and 1 downcut flush trim solid carbide router bit. The shanks and diameters are 1/4" with a 1-1/8" cutting length. Bit SpecsMaterial:Solid CarbideLargest Diameter:1/4"Shank Size:1/4"Cut Direction:Upcut/DowncutCutting Diameter:1/4"Number of Bits:2Cutting Length:1-1/8"Overall Length:3"Number of Flutes:2