The name says it all. Finally, a fighting purr system in one, user - friendly unit. This call can be used by holding it in one hand and rotating the spindle with the other or by placing it on the ground for one-hand operation. The Ultimate Fighting Purr® sounds and is deadly on the field. Knight & Hale developed the Fighting Purr calling system in the late 1980's and it has proven to be a turkey-killer from day one.