1pcs with 1/8" inside diameter and 6mm outside diameter,1pcs with 8mm inside diameter and 12mm outside diameter,1pcs with 3/8"inside diameter and 1/2" outside diameter,1pcs with 1/4" inside diameter and 1/2"outside diameter,1pcs 6mm inside diameter and 12mm outside diameter router bits.
You can put the 1/8" inside diameter and 6mm outside diameter into the 6mm inside diameter and 12mm outside diameter router bit,then you can get a smaller one,as the picture shows.