The True Double is in Primos' Piggy Back Series, meaning it has one frame stacked on top of another. This gives you 0.0625 in reed separation so your reeds don't stick. Wanna make that bad boy strut? Well, with the True Double you can do just that. It is a very easy call to use. It produces turkey talk with a true turkey rasp and tone. It also makes raspy yelps, clucks, cuts and cackles.