The Onsrud 68-104 router bit is used for cutting Hard Plywood , Laminated Chipboard , Laminated Plywood , MDF , Soft Plywood. It has a cutting diameter of 5/8", a cut length of 1" and a shank diameter of 5/8". The bit has a UNC coating and is made of PCD Tipped. The 68-104 has 1 flutes