A is related to the Third Eye. E is related to the solar plexus.
The note of the bowl when it is struck like a gong is
E 675 Hz
The note of the bowl when it is sung on the rim is
A# 238 Hz
Size: 6.5" diameter x 2.2" height
Weight: 1 lb. 12.0 oz
Rim Thickness: Averages 2.5 mm