Set of 3 blackened brass singing bowls

Singing bowls blackened and with symbols in a set of 3 made of brass in Zen style. The singing bowls are cast and machine finished. The symbols in the singing bowls are e.g. Buddha's Eyes, Double Dorje and OM, they come assorted. 9 × 9 × 5 cm, 8.5 × 8.5 × 4.5 cm, 7 × 7 × 4 cm