C.M. Brumfiel's Old School Turkey Calls presents the Old School Double Pane Slate call. The double pane slate call is hewn from a single block of wood. This slate is by far my favorite slate that I have ever used. It fits very nicely in your hand and produces realistic yelps, cutts, purrs and clucks. Not only does this call have that Old School look and feel it also talks turkey. $35.00 + $7.00 for shipping.