LARGE AIR OUTLET, HIGH PRESSURE - Although this aquarium air pump is compact in size, it provides large compressed air with high pressure. Flow rate 1250GPH, pressure 0.03Mpa, power 35Watt ENERGY EFFICIENT, LONG SERVICE LIFE - This aquarium air pump is designed with premium material and easy to maintain. Lubricant-free. Electromagnetic technology. High-quality cylinder and piston made of wear-resistant materials ensure low energy consumption and long service life EFFICIENT HEAT DISSIPATION - This commercial air pump comes with an aluminum alloy housing with an enlarged surface for efficient heat dissipation. (Reminder: The pump should be placed in a well-ventilated place. A cooling fan will help greatly extend the life of the pump.) ACCESSORIES - A short piece of tubing and a 6-outlet volume adjustable metal manifold are included in the package of this pond aerator for easy application. Users only need to purchase a standard 3/16" air tube and air stones to start the operation.