ECHO CALLS INC Diamondwood/Wood Poly Ducks Double Reed Bocote Timber/Pol. This is a double reed which are great for the beginning caller all the way to the seasoned hunter. They are very easy to blow and work best in the green timber. Very soft pitched and great for close in calling. Specifications for ECHO CALLS INC 90016 Diamondwood/Wood Poly Ducks Double Reed Bocote Timber/Pol: Manufacturer: Echo Calls Color: Brown Species: Duck ECHO CALLS INC 90016 Diamondwood/Wood Poly Ducks Double Reed Bocote Timber/Pol