Doyon AEF050 100 Qt Spiral MixerSimple to use digital control. 9 programmable speed and time settings. 2 speeds for higher efficiency. Digital display of mixing time. Unique stainless steel bowl with high center that eliminates dough feeder post. Prevents dough overheating for longer yeast viability and better gluten development. Spiral hook designed for maximum efficiency. 2 powerful independent heavy duty motors, one for the bowl and one for the hook (except AEF015SP & AEF025SP).