Primos Mastering The Art Duck Pak -Practice along with Primos as they teach you the fundamentals and advanced techniques on duck and goose calling. The Duck Pak includes the Primos Original Wench style duck call and a 2 hour DVD of the most comprehensive waterfowl calling instructional Primos has put together. Original Wench style duck callMastering the Art DVD about calling waterfowlFundamentals and advanced techniquesPrimos' highest selling duck call