1.53.3mm Adjustable Dispenser: The 53.3mm base is designed to work with tapered Breville 54mm portafilter baskets, including Barista Express, Pro, Touch, Bambino Plus, Infuser, and Duo-Temp Pro. 2. Consistent Brewing: The palm dispenser features three sloping ramps that move the coffee in a circular motion efficiently, evenly, and consistently to create a uniform cupcake. No more inconsistencies between baristas. 3. Adjustable Depth: The height is easily adjustable via its screw mechanism (no grub screws, shims, or Allen keys required) to accommodate different doses or baskets, and you can set the desired tamping depth to maintain consistent tamping pressure every time. 4. Ergonomic Handle: This espresso dispenser is made with an ergonomic and smooth red rosewood handle that feels comfortable and sturdy to hold. Thus, providing a stable operation so that you can easily make a perfect coffee cupcake. It feels perfect in your hand.