Features:Made of top quality plastic, it is durable.Designed for 3D printers.The bearing is high precision, long life and low noise.Operating voltage is DC12V, prohibit overload use. 2-terminals power connector, easy to install. It is excellent for cooling heat sinks on hot ends, prints, or other cooling needs.Descriptions:Rated voltage: DC 12V Rated current: 0.18AFan speed: 650010%rpm Noise: 25dBA10% Life: 35000 hours Inlet size: 31mmOutlet volume: 20x15mmSpecifications:Material: plasticSize: 50*50*15 Line length: 1mColor: blackPackage included:2 x 3D Printer Cooling FansNotes:1.Due to the difference between different monitors,the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures.2.Due to the manual measurement and different measurement methods, please allow 1-3cm deviation.Thanks