4" Industrial Plant Material Grinder (Compare to Custom Cones)BVV 4" Industrial Plant Material Grinder The 4" grinder from BVV will grind your dried plant material into a consistent, manageable size. The grinder is easy to use and can power through over 1. 5 lbs per minute or as fast as you can feed it! It can grind dense flower or leafy trim , as long as it is pre dried. This machine will help you keep the trichomes and terpenes in the plant where they should be due to the low operating temperature, in