Type: DrumsThese Hat-Box shaker - drums, another development of mine, have to do with 3"h x 3" large. Onone side is a wood head and the other is a mylar plastic head. You can turn the shaker to get various sounds.Each shaker-drum is hand made and among a kind.You can purchase them in a 2 pack matched set for $38.00. They come in many fun colors.