Grosse-Caisse Yamaha CB7028New conception Every aspect of the shell, from material to design, has been reviewed and upgraded in the pursuit of superior sound. Dark Wood Finish A dark wood finish exudes sophistication and elegance. Yamaha Remo Nuskyn Head Yamaha Remo Nuskyn playing heads are supplied on 32" and 36" CB 7000 Series models. These high quality heads offer attack and sustain that is similar to natural skin, along with deep, rich resonance.