This Purple Heart Striker will work on any friction call, but was designed for the Mountain Hollow Game Calls line of friction calls, such as the Gobb-Stopper, Double Talk Extreme, the Premium Wood Double Slate Series, and the Double Talk Legend. Because the Purple Heart wood is so hard, it gives off the highest pitch hen talk when striking the surface especially glass. Always a good idea to have an extra one of these strikers in your turkey vest in case you lose one or just so you can use it to talk a little turkey!