Noctua NF-A4x10 FLX ( 40x40x10mm ) | 40mm | Axial fans | Air cooling | Aquatuning USA
Creality Noctua NF A4x10 PWM 40mm x 10mm Ultra Quiet Silent Fan 12V 3 Pin Premium Cooling Fan for CR 10/CR 10 S5 mini 3D Printer|3D Printer Parts & Accessories| - AliExpress