The Catalina Maple series starts with the Gretsch maple formula shell. Gretsch carefully developed the maple shell specification to produce tones that explode with attack and volume, and project a balanced amount of warm, low-end frequencies. All Catalina Maple shells are 7-ply, 7.2mm. Gretsch equipped the shells with "Gretsch Classic" features and hardware, including 30-degree bearing edges, fully-adjustable Gretsch ball-and-socket tom holder with 12.7mm tom arms, 9020-style mounting brackets and their famous 5-lug configuration (a standard Gretsch feature for over 50 years) for all 10" and 12" toms. The rounded badges on this five-piece shell pack are a first on any Catalina Maple kit. All drums feature a multi-step lacquer process that produces an extremely glassy-smooth finish that is hard and durable. In addition, Gretsch partnered with Remo drum heads to produce a distinctive batter and resonant head combination. Catalina Maple drums are easy to tune and produce full tones right out of the box. Add-on drums are also available to allow for further drum set expansion. Cymbals and hardware sold separately.