DW"s flagship line, the Collectors Series, are the original US-made custom drums. For years, drum makers have preferred maple for its resonant tonal qualities. Maple is a traditional shell material that provides low-end punch, warmth and attack. This DW Shell Pack features North American Maple shells with 3-ply reinforcement hoops. Toms 8-13" are 6-ply, while 14" and bigger are 7-ply. Bass drums are 7-ply and snare drums are 10-ply (with 6-ply reinforcement hoops). It also features DWs patented STM (suspension tom mount) system, which allows drums to vibrate independently, allowing maximum resonance while securely holding the drum in place. Because there are no washers or grommets inhibiting the lug rod receiver, choking is reduced and tuning is as easy as ever. To give drummers even more control over their sound, DW created its patented True-Pitch rod system. The rods feature 5mm threads rather than the 12/24 thats standard on most other drums. To compare, there is 1 thread every 0.8mm on True-Pitch® rods (about 20% more threads), versus 1 thread every 1.05mm on most other drums. The result is a more exacting tuning process. Crested by chrome hardware, this shell pack features a 13 x 9" rack tom, a 16 x 16" floor tom and a 22 x 18" kick drum. Note that DW products are not available for further discounting online. For additional information, please call 888-566-6123.6-ply and 7-ply tom shells 7-ply bass shells Chrome hardware DW suspension tom mounts (for increased individual drum resonance) True-Pitch rod system w/5mm threads Made in the USA