【64mm Flat Burrs】Custom made 64mm stainless steel flat burrs. Upgradable to SSP burrs for different coffee tastes. 【Single Dose & Zero Retention】True Zero Retention <0.1 gram. Even without bellow this grinder reaches almost zero retention. Use blow-out funnel with lid to completely empty the dead space. 【Plasma Generator AKA Ionizer】Plasma Generator inside exit chute reduces static. 【Stepless Adjustment】Redesigned dial is wrapped with chrome. The included metal indicator makes grind size so much easy to adjust. The adjustment is stepless. It can be dialed in for espresso with high precision. 【Anti-Popcorn Ring Integrated】The integrated Anti-popcorn ring help increase grinding speed. 【58mm Aluminum Dosing Cup】The 58 mm dosing cup is made up of food grade aluminum. While a portafilter can be used in the portafilter rest, it is best to use the dosing cup, especially if your portafilter isn’t 58mm. Dosing cup is made of food grade aluminum. MiiCoffee DF64 II single dose coffee grinder is complete re-design of the old populate DF64 grinder. It integrated the best elements from DF64V and DF83. The three seated position for the upper burr carrier integrated wave spring makes the grinding chamber absolutely stable. At the same time it achieves minimal retention at the new level. The exit chute is equipped with plasma generator (aka Ionizer) that reduces static to non-existent. DF64 II now comes with custom made stainless steel 64mm flat burrs that deliver a fluffy grind with minimal clumping and consistent particle size distribution. The integrated Anti-popcorn cover help increase grinding speed.