Peter Hess phKS9-K, Peter Hess® Therapy Singing Bowls - head bowl, this thinwalled singing bowl weighs about 250 to 300 grams, the diamter is aournd 14 cm and the heigth around 4 cm. This bowl emits a high pitched sound suitable for frontal and paranasal sinuses.This bowl is made out of 12 metals., Mallet recommendation: FS-K / phGS-2la / phGS-1la For a safe hold in the head region we recommend the suction disc 22a.