Feature 1Cooling fan is specially designed for 3D printers. 2Low noise (30dB) allows you to work without distraction. 3Large air volume(8-14CFM) and high rotating speed(4000-6500 r/min). 42 pin power connector - Cooling fan with strong stability. 5Long service life - Made of high-quality ABS, durable to use.Features: Cooling fan is specially designed for 3D printers. Low noise (30dB) allows you to work without distraction. Large air volume(8-14CFM) and high rotating speed(4000-6500 r/min). 2 pin power connector - Cooling fan with strong stability. Long service life - Made of high-quality ABS, durable to use. Specification: Type: Cooling Fan Model number: 5010 Speed: 4000-6500 (r/min) Air flow: 8-14CFM Noise: 30dB 2 Pin: 2.54mm Connector Material: ABS Weight: Approx. 41g Size: Approx. 50 * 50 * 10mm / 1.9 * 1.9 * 0.4in Package list: 2 * Cooling Fans Note: Please allow slight error due to manual measurement. Thanks for your kind understanding. .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }