【Unique Spirographic Gears Movement Design】 Five independent gears work in harmony and spin smoothly; 10 needles multiple needle configuration matches with irregular spiral curve movement, just spin 3-5 rotations can achieve optimal stirring, distributing evenly and level, fluffy and no clumping. It promotes better extraction and reduce espresso channeling, and leading to a more nuanced and flavorful cup of coffee 【Adjustable Needle Height】Extended screw thread design can help adjust height up and down to fit different depth baskets perfectly. It is compatible with all 53mm±1mm portafilter and grams of 13-25g portafilter filter baskets 【Universal Locking Closure Design】Can perfectly fit all kinds of material (51,53 mm's) portafilters, such as stainless steel or anodized aluminum, etc.; and it can also perfectly fit different types of (51,53 mm's) portafilters, such as 2-ear and 3-ear, etc., avoiding the problem of magnetic design vibrating the surface of the ground coffee 【Standard Cleaning Brush Base】Reduce cleaning and improve efficiency Say goodbye to nowhere to place clean and hygienic 【Detachable Design】Easy to install and remove, every place has been carefully handled to create all-round cleaning