Gretsch Catalina Birch 5 Piece Drum Set in Caribbean Blue Finish The Catalina Birch series starts with the Gretsch Birch formula shell. All the birch drums use the same 100 percent birch 7-ply 7mm shell throughout the kit. A carefully developed shell that have a more Gretsch-like 30-degree edges which should den unnecessary sustain while bringing out more shell tone The shells are equipped with...