The Yonico 14522 Straight router bit set is excellent for all dado and straight cut routing needs. Made from K10 industrial grade carbide, These router bits will ensure that every cut will be perfectly smooth and chip free. The included 1/4" Dado router bit is upgraded with a complete solid carbide top and blade as opposed to standard dado router bits which have carbide blades Welded on. This vital upgrade prevents otherwise common 1/4" Dado bit breakage. Set includes a beautiful solid wood storage case. All bit shanks are 1/2".