The expansion pack allows you to swap between a total of four screen sizes to fine-tune the finished milled herb to your preference. All the screens are made using food-grade (304) stainless steel ensuring safer and more efficient processing. The varying screen sizes are perfect if you have alternative uses for your milled herb. If you’re looking for a finer mill to suit a specific herb, the screens included in the Expansion Pack can give you this result. 

Pieces Included in the Pack: 

• Fine Screen
• Super Fine Screen
• Ultra Fine Screen
• Extra Stainless Center Rod and Screw (easily swap between two screen setups)