WOODHAVEN CALLS Woodhaven Custom Calls Cherry Classic Slate Friction WH056 Combining the best Pennsylvania slate with the cherry sound chamber is the result of a slate call with a sound that is unequaled.&nbsp; Long, high front breaks off to a sweet rasp and tones down to quiet yelps, clucks and purrs. Surface Conditioning Kit. Surface Saver Lid. (2) hand matched strikers.