Fits perfectly into the Senseo Latte. However, I had no desire to test different grinds the coffee powder - I only wanted to prepare my favorite filter coffee using the Senseo. I therefore recommend the use of replacement pads from Mr.Pad, the questionable Padschweissgerät. However, the pads of this part fit perfectly into the Duck, are preformed with depression for receiving the coffee powder and have an attached lid, also made of filter paper. Thus, the cleaning of the Ducks is facilitated considerably after use. The higher price of approximately 7 cents per filter is to get over mM, especially the coffee and is still tasty and without crumbs. And the Senseo remains clean.