The Moka Express, made by Bialetti in Italy, is the original stove top coffee maker. With it you can make authentic espresso at home. It is made from solid cast aluminium with a black acrylic handle and knob. All pressure valves are fitted with top quality stainless steel springs and ball bearings for safety and durability. It is suitable for all hobs except induction. The 4 Espresso Cup is approximately equivalent to 230ml/8 fl.oz (maximum boiler capacity). Please note that this cup size is based on espresso cup sizes and not on regular tea or coffee cup sizes. The coffee maker has an overall height of 18.5cm/7.3in with a base of 9cm/3.5in. . It should be hand washed in warm soapy water and rinsed clean.