interesting bongos

Surfing Ebay and saw these. Never saw them before. Ad says solid-shell. Must be light - easy to hold. Goat skins. Tricky tuning - probably can't really crank up the macho. Any guesses as to the type of wood?
http://www.ebay.com/itm/NEW-SET-of-TYCO ... 5891fdfbc3
http://www.ebay.com/itm/NEW-SET-of-TYCO ... 5891fdfbc3