WIDELY USED30mm blower fan; designed for cooling or ventilation of 3d printer, helmet, airsoft goggles, LED Lighting, humidifier, memory modules, etc. or as a replacement fan MICRO BLOWERSSquare - 30mm L x 30mm W x10mm H Rated Voltage: 12V Current: 0.09Amp Power: 1W Airflow: 1.85CFM Static Pressure: 0.46In H2O Noise: 29.2dBA Speed: 9000RPM POWER CONNECTIONXH2.54-2Pin fan connector with 150mm (5.91 in) cable (Red + Positive, Black - Negative); Operating Voltage Range: 7 to 13.5V DUAL BALL BEARING Rated at 50,000 hours and allows the fans to be laid flat or stand upright; Smaller lightweight, only 0.28 oz, ideal for applications that have limited space PACKAGE LISTIncludes 2 pieces 30x30x10mm 12V mini dc blower fan and mounting screw set; keep your system cool and extend the life