Brand: MHW-3BOMBER Name: Yu Series-Unibody Bottomless Portafilter Dimension: 58mm Weight: 495g Material: SUS304, Silicone Unibody Design The integrated structure combines the Bottomless Portafilter and filter basket into one seamless piece, eliminating the challenges of traditional bottomless portafilters and making cleaning effortless. Precision Filter Holes This design has 891 precision filter holes to enhance extraction efficiency. This means it allows workers to produce a rich flavor for those who want to taste it with any coffee experience. Straight-Sided and Flat-Bottomed The straight-sided and flat-bottomed design of the bottomless portafilter improves stability and promotes even distribution of coffee grounds, ensuring consistent extraction results every time. Silicone Design The silicone parts make it comfortable and easy to use, plus it gives a firm grip and makes the user experience better while making a coffee.