☕ 【BETTER ESPRESSO EXTRACTION】WATCHGET coffee paper filter effectively improve the espresso extraction rate and reduce coffee splash. Prolong the life of the filter basket and the shower screen. Cleaning the coffee machine becomes more easily and convenient. One sample pack, total of 100 filters. 100pcs a pack of independent sealed packaging is cleaner and more hygienic, not easy to damp. ☕ 【Prolong the Use of Basket】Designed for 58mm portafilter basket bottoms. We found that the bottom of most 58mm portafilters are 2-3mm smaller than the top. Regular 58mm espresso paper filter is too large at the bottom and the 54mm may a little bit small. The 55mm filter perfectly places at the bottom and prevents the fines from blocking the basket, effectively increases the coffee extraction. ☕ 【EASY TO USE】Put a 55mm filter paper at the bottom and a 58mm filter paper on the top to disperse the water more evenly and avoid channeling, which is similar to the effect of a stainless steel puck screen to improve water distribution to some extent. Directly throw away after use, save your time to clean the puck screen each time, making your extraction process more efficient. ☕ 【PREMIUM MATERIAL】The paper filter is delicate and uniform in thickness, filter fine grounds to improve the extraction. Filter paper in the USA and cut it in China, it's food-safe and chlorine-free. Good flexibility and penetration performance. ☕ 【55MM CUSTOM EDITION】The diameter of WATCHGET espresso filter paper is 55mm. Designed for the bottom of most 58mm portafilter baskets including E61, La Marzocco, Breville, Gaggia, Flair 58, etc. different espresso machines. If you have any problems or concerns, please contact us anytime you feel convenient, watchget will do our best to solve it.