RANIT 4 Pcs 30mm x 30mm x 10mm 3010 DC Cooling Fan 24V 2 Pin Fan for 3D Printer Computer Case Fan Size: 30mm x 30mm x 10mm Working Voltage: DC 24V. Speed: 10000RPM Working Current: 0.08A; Cable length: 200mm. Package contents: 4 x DC Cooling Fan