All head sizes accept a 32786NPBN Mustad jig hook. 3/16oz accepts 1/4" 3D molded eye and a 1/0 Hook, 1/4oz accepts 9/32" 3D molded eye and a 2/0 Hook, 5/16oz accepts 5/16" 3D molded eye and a 3/0 Hook, 3/8oz accepts 5/16" 3D molded eye and a 4/0 Hook, 1/2oz accepts 3/8" 3D molded eye and a 5/0 Hook.