RC Motor Waterproof Fan 25/30/35/40/45/50mm 10000-30000RPM 5V-12V DC Rapid Cool Cooling Heatsink for Brushless Motor 28/36/42mm

RC Motor Waterproof Fan 25/30/35/40/45/50mm 10000-30000RPM 5V-12V DC Rapid Cool Cooling Heatsink for Brushless Motor 28/36/42mm

AliExpress