Yamaha Stage Custom Birch BTT-612URB 12-Inch Tom Tom - Raven Black Stage Custom design borrowed from Yamaha's legendary Recording Custom drums Utilizes Yamaha legendary ball mount & clamp system that provide flexible and stable tom placement. Yamaha Enhanced Sustain System (YESS) mounts deliver increased resonance and maximizes dynamic range and sustain. 100 percent six-ply all birch shells