Yes this gong comes with a mallet.
Gong Diameter: 11" - 11.5"
The etchings on each of these gongs are done by hand by Nepalese craftsmen. No two of them look alike. No two of the gongs sound exactly alike either.
The etchings can be of various Buddhist symbols or designs.
As they are all handmade using a simple metal used for bells, you get a clean tone, with a decent amount of sustain. They are not regular bronze, like Chinese gongs.