[Safety Valve] - The safety valve regulates pressure in the boiler, maintaining optimal pressure levels to fully release the flavor and smoothness of the coffee while ensuring safe operation. [Premium Material] - Constructed from food-grade materials for durability and safety. Resistant to corrosion and rust, it is easy to clean and does not alter the pure taste of coffee. The extraction chamber is made of high-quality material, enhancing the smoothness of the brew for a premium coffee experience. [Quality Design] - Features an ergonomic heat-insulated handle and a precision pour spout for comfortable handling and controlled pouring. Reliable sealing ensures consistent performance. The polished surface provides an elegant, refined appearance. [Compatibility] - Suitable for use on gas stoves, induction cooktops, electric stoves, ceramic hobs, and alcohol burners. Compatible with induction cookers having a coil diameter greater than 8.5 cm. Slight discoloration of the base may occur when exposed to open flame but does not affect functionality. [6 Cups / 300 ml] - Based on a 50 ml standard coffee cup. Heats evenly and efficiently, producing a rich, aromatic 6-cup (300 ml) batch of espresso in minutes. Enjoy a full-bodied flavor and intense aroma with every brew.