Feature: 1. EASY INSTALLATION: Double ball hotend cooling fan with speed measurement PWM temperature control, line length for 100mm, easy for you to wiring 2. HIGH PERFORMANCE OUTPUT: 25mm fan has good heat dissipation and large air volume (3.28CFM air volume; speed is 15000 ± 10% RPM), can quickly cool the machine, to ensure that your machine is working properly 3. RUGGED AND DURABLE: DC 5V 2510 hot end cooling fan with double ball bearings, possess high accuracy, long life, low noise, very rugged, 50,000 hours of use 4. APPLICABLE MODEL: Double ball hotend cooling fan is suitable for X1C models to keep your equipment running smoothly with improved airflow and extended life 5. DC 5V POWER SUPPLY: The 2510 double ball hot end cooling fan operate efficiently with a DC 5V power supply, consuming only 0.65W of power. Enjoy reliable cooling performance while minimizing energy consumption for a sustainable usage experience Specification: Item Type: Double Ball Hotend Cooling Fan With speed measurement PWM temperature control, Line Length: Approx. 100mm / 3.94in Rated Voltage: DC 5V Rated Current: 0.13A Power Consumption: 0.65W Speed: 15000 ± 10% RPM Bearing Air Volume: 3.28CFM Life Expectancy: Constant temperature 40℃, humidity 5%~95% 50000hrs Operating Temperature or Humidity Range: Temperature -10 to +70℃, Humidity 5% to 95%RH Installation Diameter: Hole Diameter: Approx. 3mm / 0.12in, Middle Circle Size: Approx. 16mm / 0.63in Hole Distance: Diagonal Hole Distance: Approx. 28mm / 1.1in, Hole Distance: Approx. 20mm / 0.79in Wiring Instructions: Red line positive, black line negative, yellow line speed measurement, blue line temperature control. Package List: 1 x Double Ball Hotend Cooling Fan