Dimensions: Size 6: Mouth D6 x H5 cm, bottom rim 8 cm - Small Size 7: Mouth diameter 6.5 cm, height 6 cm, bottom rim 8.5 cm - Medium Size 8: mouth diameter 7 cm, height 6.5 cm, bottom rim 9 cm - Large Size 9: mouth diameter 8 cm, height 7.5 cm, bottom rim 10 cm - Extra Large ✔ The standard volume of the filter is about 170ml. ✔ The number of errors on the filter and the disc filter must be equal and analyzed evenly. ✔ The size of the filter error must be compatible with the particle size of the ground coffee beans so that it can give about 55-60 coffee pearls/1 minute. ✔ The full lid must be tight to avoid heat loss. ✔ The error on the latch (lid) must also be analyzed evenly and have a thicker password than the password error on the body and disc filter to reduce coffee better. Origin: Vietnam INSTRUCTIONS FOR MAKING FILTER COFFEE (about 1 cup of coffee) Coffee is very inconsistent, just a little deviation can affect the flavor/taste of the cup.