GDSTIME 24V 5015 PWM Blower Fan Dual Ball Bearing, 1.25mm 4-Pin Connector, 50x50x15mm DC Brushless Turbo Fan, Replacement for 3D Printer Part Cooling (2-Pack)

["PERFECT FOR 5015 DUAL-FAN MOD – Upgrade your 3D printers with this high speed 24V PWM 4pin 5015 blower fans for symmetrical cooling from both sides; Dramatically improves overhang quality, bridge performance, and fine detail cooling","MICRO JST 1.25mm 4-PIN CONNECTOR – Compact 1.25mm pitch ideal for tight spaces and high-density electronic applications; 200mm (7.9 in) cable length. Plug directly into your printer's mainboard – please confirm your 3d printer model before ordering","PWM SPEED CONTROL – 1.25mm 4-pin connector with PWM signal input allows your printer's mainboard to adjust fan speed dynamically. Full cooling power when printing, quieter operation when less cooling is needed; Smart cooling for every layer","DUAL BALL BEARING – 5015 pwm blower 4 pin runs up to 50,000 hours of continuous operation at 77°F (25°C); offering smooth and efficient operation; Operating temperature: 14°F to 167°F; Perfect for high-temperature enclosed printer chambers","Parameters – 50 x 50 x 15 mm (1.97 x 1.97 x 0.59 in.) | Voltage: 24 Volt | Current: 0.16 A | Power: 3.8 W | Speed: 8500 ±10% RPM | Noise: 48.6 dBA | Airflow: 5.53 CFM | Static Pressure: 1.42 In H2O | Includes 2 x 24V 5015 blower fan with screws and nuts"]