Duo-mix Mixer Tank. The Duo-Mix mixes and discharges dry food without fiber. It fits onto any machinery handlers. How it works: The Duo-Mix mixes and discharges dry food without fiber. Doubled inversed auger for mixing and distributing. 2 Models : Duo-Mix Bucket for loading as a bucket. Duo-Mix Tank for loading under silo (Option: weighing system). Standard equipment. Loading under a silo. Predisposition for a weighing system. Mixer/ Feeder with inversed screw. Hydraulic motor integrated. Adjustable opening door by mechanical stopping. synchronized with the auger.