Product description: Star Drums are Tama's flagship series. Since the Star series already has variants made of Bubinga and Maple in its range, the product developers wanted to create another sound option. The choice fell on walnut, a wood with wonderful visual and tonal properties. What is striking are the deep low-end frequencies that give this series a modern sound character. Specifications: Shell material 6mm 6 layers of walnut + 2 outer layers of Japanese Sen Skins Remo® Coated Ambassador for Batter Side / Remo® Clear Ambassador for Bottom SideTiersDie-Cast Feature 3 Super Resonant Mounting System (US. PAT.NO.9024163) Feature 1 Hold Tight™ Washers (US.PAT.NO.7307204) Size 8" x 6" Feature 2 Minimum Shell Contact Feature 4 Quick-Lock Tom Brackets (US. PAT. NO.9269337).