Strut Select Closing Time pot calls are produced from select American kiln-dried walnut and CNC machined to exact specifications. They feature a frosted high-pitched glass striking surface or a pure raw slate striking surface mined from the Pennsylvania mountains. Each Closing Time call is tuned using a glass soundboard and coupled with a Dymalux/Ash striker this call is nothing less than pure turkey.a American Walnuta Frosted Glass or Pure Raw Slatea Dymalux Strikera CNC Machineda Made In The USA