Description This blind filter is used for back flushing on semi-automatic espresso machines that have a pressure release mechanism. It fits into the group handle in place of the standard filter. Back flushing your coffee machine helps to remove coffee residue which builds up inside the group head. Features - Color: Silver. - Material: Stainless steel. - Size: About 6.50X5.40X1.40cm/2.55X2.12X0.55inch. - Made of premium and safe material, the item is for reliable and practical use. - With fine filtering function, it is a nice helper for you to make a cup of coffee. - It has a simple design, but very practical in use. It is sure to make coffee with fine taste. - It can be used as a practical gift for your friends who like to drink coffee, they will be very happy. - Superior material, good texture, perfect details, which can bring you a good experience. Made of premium and safe material, the item is for reliable and practical use. With fine filtering function, it is a nice helper for you to make a cup of coffee. It has a simple design, but very practical in use. It is sure to make coffee with fine taste. It can be used as a practical gift for your friends who like to drink coffee, they will be very happy. Superior material, good texture, perfect details, which can bring you a good experience.