The Asso Coffee Jack coffee leveler is a distribution tool used to groom the coffee in your portafilter quickly and easily. With the Jack, you can expect a much easier time getting a consistent and level tamp, removing one of the many variables from pulling the perfect shot. The depth at which you level the grounds in your portafilter is adjustable to the millimeter, with each setting clicking into place and locking in for consistent results. To distribute and tamp, simply place the Jack on top of your portafilter and spin rapidly, adjust height as needed. As a signature, the Asso Coffee branding is laser engraved into the body. Measures 54.7mm in Diameter Fits 54mm Portafilters (Not compatible with Breville 54mm Portafilters)