Super fine filter, universal bowl for high pressure coffee machine, porous fine filter, makes your coffee delicate. Will not rust and is durable, with a thick and durable cup body. Combines two styles for a more practical experience, allowing you to enjoy your coffee moment. Usage: 1. Pour hot water into the cup, and do not block the relief valve. 2. Pour coffee (recommended fine grinding) into the cup. Use chopsticks or a coffee spoon to level the grounds. 3. Slightly moisten the filter paper, place it on the upper filter, and screw on the upper cup. 4. Tighten the upper cup securely to prevent leaks. Do not rotate the handle of the pot to avoid loosening. 5. Heat using a gas lamp or alcohol stove. Pre-warming the base with hot water helps achieve even heating. 6. When coffee begins to come out, reduce to a small fire to prevent rapid extraction. 7. Allow the coffee to brew slowly. Color: Silver Material: Stainless steel Size: 51mm Contents: 1 x 2 Cup Filter Basket, 1 x 4 Cup Filter Basket Maintenance: 1. For first use, clean and dry the funnel with a mixture of white vinegar and water. 2. Avoid impact with sharp objects during use to prevent scratches. 3. After use, wash with a small amount of neutral or alkaline detergent, dry with a soft cloth, and store in a dry, clean place. 4. Avoid dry burning. Note: Lighting and display differences may cause the color of the item to appear slightly different from the actual product. Measurement allowance is +/- 1-3 cm.