7x8,8x10,9x12,14x14,14x16,6x14,18x23. Puple heart is a unique sounding wood for drums, as it looks it has a deep, dark sound with a lot of sustain.  This kit feautres the 9-ply VLT evolution also has no reinforcement hoops for fat, wide open tone with supreme resonance. 333™ shells are available only on Collector's Series® This kit has lacquer specialty, natural to black burst with black nickle hardware that really accents the dark purple heart wood.  This kit also features an 18x23" bass drum which might be the perfect size bass drum, it has a tremdous mix of punch and depth. Don't worry 23" drums heads are readily availble from most major head manufacturers.  If you're looking for a big kit with deep dark tones, with nice sustain, that you don't see everyday, this is it!!