Meinl Percussion 6" Cuica with Aluminum Shell & Bamboo Shaft, Perfect for Samba Music-NOT Made in China-Tunable Goat Skin Head, 2-Year Warranty (QW6) Aluminum shell with bamboo shaft: The 6" Diameter aluminum shell not only provides a traditional caeca sound, It is also able to project loud and clear in a street music setting Hand selected goat skin head: The 6" Goat skin head aids in achieving a traditional caeca sound while providing maximum volume and tone in any setting. Tuning key included Bamboo shaft: The bamboo shaft produces a distinctive note-bending effect that is found in most styles of Brazilian samba and jazz fusion Perfect for street music: commonly used in Brazilian street music, This caeca projects even in outdoor street music settings Official Two-Year Mein Warranty: all Mein cuirass carry a two-year Manufacturer's warranty when purchased from authorized retailers