The Distributor features three angled slopes that efficiently, evenly and consistently move the coffee around in a circle motion to create an even puck, no more inconsistencies between baristas. 58mm size base is designed to work with 58mm portafilters and espresso machine models including: Breville, Rancilio, La Pavoni, Hamilton Beach, ECM, La Marzocco, Rocket, Alex Duetto, Astoria and all E61 group machines. Low profile makes it easier for barista to tamp with straight arm at 90 degrees to the counter. Evenly redistributes coffee grounds and provide a larger flat surface area for the barista to apply an even tamping pressure using the palm of the hand which helps with control and consistency. Height is adjustable by it's screw mechanism (no grub screws ,shims, or allen keys required) to suit different doses or baskets, you can set your desired tamping depth for consistent tamping pressure every time. The 58mm coffee leveling distribution tool even suits those using very low doses or larger baskets and can be adjusted to suit a range of doses, depending on specific roasting styles. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-dadangjia