This bottomless portafilter from WELHOME is designed to improve espresso quality by allowing you to see and control the extraction process. - Enhances flavor by extracting coffee oils through the filter design, giving you the potential for a richer, more delicious cup. - Wooden handle is detachable and washable, providing a comfortable grip and easy maintenance. Suitable for home, office, and cafe environments. - Bottomless design lets you observe the extraction in real time, helping you spot flaws such as channeling or uneven flow and troubleshoot grind and tamp adjustments. - Made of high quality 304 stainless steel, offering rust resistance, corrosion resistance, and long service life. - Compatible with WELHOME models KD-210S2, KD270, KD310, and KD135B, ensuring a reliable fit with these machines. Usage scenarios - Home espresso dialing: use the visual feedback to fine-tune grind size, dose, and tamp pressure for consistently balanced shots. - Office or break-room demonstrations: show how changes in grind, dose, or pressure affect extraction and flavor in real time. - Cafe training and quality control: train new baristas to identify extraction issues and optimize technique by observing shot flow and crema development. Designed to deliver dependable performance with practical maintenance, this bottomless portafilter helps you achieve better consistency and greater insight into your espresso workflow.