They are all made from approximately the same size gourd with different size feather cap . Pebbles are used for the rattle sound. For traditional rattle sound Ali'i poe seeds can be reqested. The Ali'i poe seeds give the uli uli a deeper tone rattle. Ipu Calabash gourd is a beautifully crafted gourd used to add rhythm to hula performances by tapping on the ground and patting on the sides for a two toned beat.
Different sizes produce different tones.
Ipu-heke Double Calabash Gourd produces an even richer rhythmic sound than the above single ipu calabash. The double calabash is two different gourds finely crafted together. Different sizes produce different tones. Kala'au are long hardwood rhythm sticks made of premium quality extra hard wood. These instruments carry a loud resonant sound.