2 X 4.2 fl. oz (125 mL) of Durgol Swiss Espresso Machine Decalcifier/Descaler Solution quickly and safely descales, cleans, and protects all brands and types of coffee and espresso machines. One single-portion bottle (4.2 floz./125 ml) can dissolve up to 0.35 oz./10 g of lime. Fast shipping within 1 business day upon purchase!