quality 100% brand and . Made of durable rubber. Includes a rubber blind plug and a portafilter handle with a filter screen. Easy to clean Insert the blind plug into the tip of the portafilter and add 3 to 5 g of espresso machine cleaning powder or a dedicated cleaning tablet. Easy to use Safe and non toxic. Press the brew button, run for about 10 seconds, then turn off. Use rubber. Repeat the above process about 5 to 6 times at intervals of 10 seconds. Keep your espresso machine clean Keeping your espresso machine clean is important to achieve the espresso every time. This backflushing disc is an effective solution to help maintain coffee flow. Practical use scenarios Regular maintenance: Incorporate into routine cleaning to keep the machine's flow at its . Post cleaning residues: Flush after using cleaning powder or tablets to clear residues. Before serving: Perform a quick 5 to 6 cycle flush to ensure consistent flow and flavor for guests.