Gretsch Catalina Club Street 4-Piece Drum Set Shell Pack - Red Sparkle The mahogany shells offer reliable tone and remarkable projection revolutionary "adjustable - depth" bass drum that can be expanded an additional two and - one - half inches in depth, from a 12" x 16" to a 14 1/2" x 16" When the bass drum is "opened up" the drum delivers a robust feel with a focused punch, impressive depth and controlled overtones. For a more traditional "jazzy" sound, simply close the depth of the drum using the three adjustment rods The rods are notched for quick and precise adjustments, making the Street Kit the perfect solution for the player whose gigs vary from one style to another 4-piece Catalina Club Street: 12" to 14.5" x 16" bass drum, 6" x 10" mounted tom, 11" x 13" floor tom, 5" x 13" snare