Peter Hess phKS9-SO1, Bolo special heart bowl, small, Ø ca. 16 cm, height ca. 8,5 cm., This joints bowl has a weight of about 650-720 g., Because of its particular design, this singing bowl develops an outstandingly intense relaxing vibration that are inwards-bound. The opening in the centre of the base of this bowl allows for ideal placement on the body. . In therapeutic fields this new generation of singing bowls is already very popular.