Compatibility Perfected: This 58mm coffee distributor is meticulously designed The base of the powder distributor descends slowly along the bottom of the middle cover without adjusting the height Self-adaptive adaptation to the height of the flour without adjustment Optimal Coffee Ground Distribution: Engineered with three angled slopes, this tool ensures a circular motion for coffee grounds, achieving a consistently even puck. Ideal for those using a bottomless portafilter, it eliminates inconsistencies.