It is a barrel form made of hard wood. The length is 5 cm. It is covered with goat skin on one side. We fixed a 15 cm long fishing-line into the skin which is joined to a 12 cm long wooden handle. While spinning the barrel around, the string rezonates the skin and produces a hardly bearable sound similar to the frog croak. It is terrible but funny. It is perfect for making noise or rooting. The surface is treated with linen oil. It is 100% hungarian product.