X8 Drums X8-OCEAN-W Ocean Waves Drum The drum has synthetic heads on both sides which are both transparent so you can see and better control the movement of the beads floating about loosely inside. An end cap allows you to adjust the inside fill, adding or reducing the amount of beads inside. The highly durable synthetic shell is finished in a blue paint with black and white edging. 1"H x 10" Dia.