Air Inlet: Free adjustment, the larger the outlet, the faster the material is released. Raw Entry: The stainless steel hover does not require any stopping to insert ingredients and increases productivity. Top lid screw: butterfly nut, easy to twist. S-shaped opening: S shaped design prevents backflow of dust. Grinding Chamber: All stainless steel, long lasting and rust-free. Micro Switch: Open the grinding chamber to power outages while working, so that the lid opening is not dangerous. Outlet: The top fabric is an ash proof layer, the bottom bag is made of raw material and a high density bag. Base: Artificial synthetic rubber to reduce slippage and vibration.