Koro is an incense burner machined out of solid brass. It is inspired by the oversized burners preceding the entrance at Japanese temples. Multiple incense sticks can be placed at once, to be burned simulateously or saved for another time. 

Originally thought of four individual holes, but it looked like a button. A single, larger hole worked much better (and was easier to make, or so they told me). Still experimenting with weight saving and finishes...