Usage Tips:Bottomless Filter Holder: Bottomless machine allows you to intuitively see the position and color after water flows through the coffee powder. Suitable for use at home or in the office, or as an exquisite gift for lovers, convenient and practical. It can produce more and better extraction, allowing us to judge the uniformity of the brew to make a more delicious cup. Observe the state of extraction, identify flaws and errors before brewing, and adjust the bottomless extraction to change the taste. The filter holder can be detached freely, making cleaning more convenient, and it can also be replaced with different materials, allowing you to experience the fun of DIY.Material: Silver + ABS + Stainless Steel Package Contents: 1 x Coffee Portafilter, 2 x Coffee Filter Basket (products not included). Note: Photography and different displays may cause slight color differences in the item shown. Measurement allows an error of +/- 1-3cm.