Toca Freestyle Klong Yao Drum (Red Marble) The 31-34 Inches-long, goblet-shaped drum features an 11-12 Inches-diameter head stretched over a moderate-sized bowl that tapers to a long, rrow lower shell section This design allows the Klong Yao to produce bass tones that are surprisingly deep and powerful considering the drum's size and weight This makes it an excellent choice for the Inchesbass drum voice Inches in a drum circle or percussion ensembleespecially since it can also produce well-balanced higher tones when played at the edge of the head.