5 inch Brass Singing Bowls.
Good things come in small packages. A singing bowl doesn't have to be big to sound good. They come in different keys too. We have B, F, D, E, G and A.
In the West the heart chakra is F. The chakras look like this:
A Third Eye
E Solar Plexus
D Seat of the Soul
C Base of the Spine
Tibetans believe the heart is the key of D. That would make the Base Chakra: "A", and so forth.