Rio Box Call Setback Bat-Wing Cut The sound chamber on this

The sound chamber on this box features a unique undercut that increases the size of the chamber

and a heavy-duty O-ring holds the insert securely in place

Keep the playing surface of your Rolling Thunder Game Calls glass

• (2x) Standard cork wedges

Keep your MeanDuck j-frame duck call sounding its best with the MeanDuck Tune-Up Kit

Rio Box Call Setback Bat-Wing Cut The sound chamber on thisWe built the Rio Box Call to be high pitched and squeaky. This box call is deadly when chasing Rios out west, but it's also a wild card for those tight lipped, public land Easterns that have heard every other call on the market. Features a poplar body with a walnut lid.