WINSINN 40mm Fan 12V Dual Ball Bearing DC Brushless Quiet Cooling 4010 40x10mm for 3D Printer Extruder Hotend Makerbot MK7 MK8 CPU Chip Arduino - 2Pin 0.1A 1.2W 6000+-5% RPM (Pack of 5Pcs)

WINSINN 40mm Fan 12V, 3D Printer Micro 12 Volt Fans 4010 Dual Ball Bearing, Brushless Cooling 40mmx10mm 2PIN (Pack of 5Pcs)

WINSINN 40mm Blower Fan 24V, Ender 3 Fan Upgrade 24 Volt Fans Blower 4010 Dual Ball Bearing, Works with Ender 3 Pro 3X CR-10S (Pack of 5Pcs)

WINSINN 30mm Fan 24V, 3D Printer Micro 24 Volt Fans 3010 Hydraulic Bearing, Brushless Cooling 30mmx10mm 2PIN (Pack of 5Pcs)