Tama WBS42SSAF Starclassic 4-Piece Shell Pack (Satin Purple Atmosphere Fade)Starclassic Walnut Birch, with the perfect ratio of walnut to birch, produces a superior quality of low to mid frequency warmth that perfectly complements the clear attack and higher frequency projection of birch. This sound is not only punchy, but sweet and mellow familiar, but distinctively different from Tama sounds of the past. Features Tama traditional Bearing Edge Shape Hybrid Shells TT FT SD: 6mm, 4ply Birch + 2 inner ply American Black Walnut