The Onsrud 68-102 router bit is used for cutting Hard Plywood , Laminated Chipboard , Laminated Plywood , MDF , Soft Plywood. It has a cutting diameter of 1/2", a cut length of 1" and a shank diameter of 1/2". The bit has a UNC coating and is made of PCD Tipped. Comes in a foam-lined wooden case