The Roberts Turkey Call M-415 Wormy Chestnut call is our very finest. The beauty of the cabinet maker's art and the finest turkey sounds available are combined in this handsome call. Featuring our unique sound chamber and baffle system, the M-415 is a 2-in-1 friction call with glass on one side and slate on the other. The M-415 comes complete with a hardwood striker with built-in stone conditioner, and slate conditioning pad.