Appalachian Custom Calls Friction callsChoose between the 3" predator series or 3. 5" Gobblerstopper series. You can get slate, glass or aluminum. These calls are all hand made in the hills of Tennessee. The Ol Tom's won't know what to do when they hear these calls. PURR POT Purr pot is a new call from Appalachian Custom Calls. This slate style call gives that extremely soft purr or yelp for when that hard headed bird hangs up out of range. It'll help get that bird in just little bit