Duo-Mix Mixer Feeder Bucket. 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 equipement: Loading as a standard bucket or under a silo. Mixer/ Feeder with inversed screw. Hydraulic motor integrated. Adjustable opening door by mechanical stopping, synchronized with the auger. 1 /4 turn valve to lock the door. Adjustable, removable and bolted adaptation for any type of. agricultural machinery handler – Category 2.