About this item : The stovetop espresso maker are made from food- grade stainless steel that has anti- corrosion and rust resistance, has superior longevity when compared to aluminium designs. Enough Coffee: With a quick and even heating, accompanied a aroma, Italian espresso maker can offer you a pot of 9 cups ( 450ml ) or 12 cups ( 600ml ) of espresso in just five minutes. Use Easily: Unscrew the top and remove the filter funnel from the base. Fill the base with fresh water up to the level of the safety valve and insert the filter funnel. Fill the filter funnel with finely ground coffee ( do not press down ), and screw the top firmly to the base. Suitable for: Safety valve adjust pressure in boiler, keep pressure in appropriate level, fully release the flavor and mellow of coffee. Suitable for stove, induction cooker, electric oven, ceramic oven, stove, gas stove. Added Values: If you have any question with our greca coffee maker, please contact us, we will reply you within 24 hours. This is the coffee cup every coffee lover should enjoy.