This is the Coltri EOLO 330 Electric Portable Breathing Air Compressor Features: Standard equipment Breathing air filter Adjustable pressure switch Tank capacity: 6 liters Technical data 330 EM Engine: Single-phase electric 230 V - 50 Hz Engine power: 2.2 kW - 3 Hp Charging rate: 300 l / min - 19.8 m3 / h - 11.6 CFM Working pressure: 8 bar - 120 PSI Net weight (approx.): 55 kg - 121 lb Noise level: 66 dB (Lpa) Dimensions (W x D x H): 90 x 45 x 57 cm - 35.4 x 17.7 x 22.4 in 330 ET Engine: Electric three-phase 400 V - 50 Hz Engine power: 3 kW - 4 Hp Charging rate: 300 l / min - 19.8 m3 / h - 11.6 CFM Working pressure: 8 bar - 120 PSI Net weight (approx.): 55 kg - 121 lb Noise level: 66 dB (Lpa) Dimensions (W x D x H): 90 x 45 x 57 cm - 35.4 x 17.7 x 22.4 in The EOLO 330 series is composed of Coltri low pressure compressors for breathable air, suitable for professional use and driven by a three-cylinder pumping unit that guarantees excellent performance. Equipped with interchangeable cartridge filter, it is ideal for underwater work or with ventilated helmets. Available engines are electric, single-phase or three-phase, or Honda combustion. The keyword is maneuverability, thanks to the builtin tank and the presence of wheels. Low pressure breathing air compressor, suitable for professional use and driven by a three-cylinder pumping unit that guarantees excellent performance. Equipped with an interchangeable cartridge filter, it is ideal for underwater work or with ventilated helmets. The watchword is manageability, thanks to the built-in tank and the presence of wheels.