Professional Series Polished Kettle Exceptional resonance, projection, and tone duration throughout all dynamic levels best describe these handcrafted timpani. From leading university and symphony orchestras to talented and accomplished timpanists, Ludwig's Professional Series have provided players with the kind of performance their reputations rely on>Whether copper or fiberglass is preferred, the Ludwig tradition of Old World integrity and superior quality regulates every step of the process. The finest materials are chosen, then meticulously formed to deliver a clear, pure tone. The deep parabolic kettles are calibrated precisely to the pitch-centered tone needed to fill a hall. While kettles hang freely within an exclusive, sturdy double-ring suspension system, Ludwig's proprietary profile mylar heads provide superior resonance in concert halls of all sizes. With an adjustable Balanced Action(TM) pedal system at its base, operation is smooth and consistent.Availble in different sizes: 20",23",26", 29"and 32". Sold seperately!