This metering tray allows you to load a precise amount of flower at a time, making it easier than ever to measure and track exactly how much flower is going into each individual pre-roll in the King Kone. This makes for fewer variances between each pre-roll and creates fewer weight discrepancies at the final weigh-in, saving you time and effort in your pre-roll process. The metering tray sits on top of your pre-roll cartridges to be filled with flower. Slide the tray out to dispense, and repeat as necessary to achieve your desired flower volume.