The Coffeeduck by Xavax is a practical and a kinder to the environment alternative to a conventional Nespresso capsule. In use, the capsules differ only slightly. Xavax capsules allow you to choose your favourite type of coffee yourself and present an optimal taste result.Firmly press the coffee powder into the capsule, close the cap and insert it into the machine like a normal capsule. The coffee grinding degree should be very fine (grain size 0.2 mm).The Espresso Capsule "Coffeeduck" is NOT suitable for the following Nespresso Krups devices with single-pin slot: F897, F896, F893 (devices older than year of construction 2003), as well as devices with automatic capsule retraction and only for machines built after October 2010.