The zig zag cleaner is used to remove stems and unviable seeds after the chaf has been removed. Most customers use this after they have used the 20lb per minute hemp seed cleaner and shucker
The unit is powered by a shop vac and includes a collection unit for fine particulate.
Other than the shop vac this unit will last a lifetime due to no moving parts.
Priced reasonably give us a call with any other questions.