Our Walnut Series Features a 9-ply Shell. The inner and outer plies are Vertical Walnut with the core being Maple. This give the drum an amazing balance of dark, lush tones from the Walnut along with the rich, warm characteristics of Maple. These shells can be ordered with or without maple reinforcement rings. Choose reinforcement rings if you want a shorter decay and higher fundamental pitch on your drums, without reinforcement rings if you want a more open, resonant sound with a lower pitch. Other features include our Proprietary SBR Solid Brass Resonator Lugs, Double 45 Degree Bearing Edges, and SSS Mounts on Rack Toms.