[Adjustable Needles Depth]Adjustable needle depth around 10mm-22mm to satisfy different depth of 51mm portafilters. [Premium Materials]This Espresso coffee stirrer is made of 22PCS 0.7mm 304 stainless steel needles and aluminum alloy handle and base. Tool can help evenly distribute coffee powder in the portafilter, breaking up clumps, reducing channeling to promote more even extractions and better espresso. [Easy to Use]Fit for most 51mm portafilters. Just a few spins, the coffee powder be completely evenly distributed and not fall out. Compared with other similar products, our stirrer tool is faster and can greatly improve work efficiency. [Easy to Clean]The base of needle distribution tool with cleaning brush, when the distributor on the base to clean up the coffee power left on the needles. All moving parts can be easily removed for cleaning.