Replacement coffee micro-filters for ESPRO Table Top Coffee Presses (Press P7, P6, P5, and P3). If you own a large 32 oz ESPRO Press, your filter measures about 4” in diameter. If you own a medium 18 oz size ESPRO Press, your filter measures about 3.3” in diameter. If you own the discontinued small 8 oz ESPRO Press, your filter measures about 2.5” in diameter.