Description: Brushless, permanent magnetic rotor, maintenance-free. Stator and circuit board sealed by epoxy resin. Unique resin potting, good insulation properties,100% waterproof,amphibious design. Equipped with water flow control device, can free flow control. Low noise (less than 35dB), low power consumption, small size and high efficiency. It is great for aquarium, fountains, spout and hydroponic systems,car cooling, humidifier, air conditioner, other cooling and circulation systems. Specification: Material: high-quality reinforced ABS Size: A - (LxWxH)Approx. 8x4.5x6.5cm/3.15x1.77x2.56inch,350-700L/h,Max water Height :150-500cm,24V Waterproof plugging; B - (LxWxH)Approx.7.5x4.5x6.5cm/2.95x1.77x2.56inch,200-600L/h,Max water Height :60-380cm,12 V Waterproof plugging; C - (LxWxH)Approx.7.5x4.5x6.5cm/2.95x1.77x2.56inch,350-700L/h,Max water Height :150-500cm,24V Female Plugging; D - (LxWxH)Approx.7.5x4.5x6.5cm/2.95x1.77x2.56inch，200-600L/h，Max water Height :60-380cm,12V Female Plugging; E - (LxWxH)Approx.7.5x9x4cm/2.95x3.54x1.57inch,200-600L/h Max water Height :60-380cm,12V Waterproof plugging; F - (LxWxH)Approx.7.5x9x4cm/2.95x3.54x1.57inch,350-700L/h Max water Height :150-500cm, 24V Waterproof plugging; Outer Diameter of Thread: 2cm Package Includes: 1 Piece Brushless Water Pump Note: Please allow 1cm error due to manual measurement. And make sure you do not mind before you bid. The colors may have different as the difference display,pls understand.