An improved iteration of the original Medium Feed Rate Prebreaker. This design includes upgraded teeth that initiate the prebreaking process & regulate the flow of beans through the grind channel. This auger comes standard on all Zerno Z1 grinders delivered after Batch 4 - Summer '24 Important Note: Only compatible with the Zerno Z1. This item is included in all Z1 preorders. Please do not place add on purchases for this product after your preorder has been made.