Hand-made in the Black Forest of Germany, where the famous Cuckoo Clocks come from, these are two-tonewhistles. Blow into the mouthpiece, and you get the “cuck” sound, and then when you place your finger over the other end and blow, you get the “oo” sound. Fabulous little whistles! We have them in the five styles shown. They each measure about 5” x 1 ½”, plus the figures on top.