I just received a custom bongo drum from Matt. Last year for my 50th birthday, I ordered a custom bongo from Matt. Matt asked what I was looking for and I said something special; surprise me. It took a little over a year to get to me. Matt has been too busy to answer me questions so I am not exactly sure what I have. I measured the outside dimensions (rim to rim) and the hembra is 10" and the macho 7.5". Lots of mother of pearl inlay. The wood and skins I am not exactly sure what they are.