WINSINN 40mm Fan 24V Dual Ball Bearing DC Brushless Quiet Cooling 4020 40x20mm for Inverter 3D Printer Extruder Hotend Makerbot MK7 MK8 CPU Chip Arduino - 2Pin 0.1A 2.4W 6500+-5% RPM (Pack of 4Pcs)

WINSINN 40mm Fan 24V, 3D Printer Micro 24 Volt Fans 4020 Dual Ball Bearing, Brushless Cooling 40mmx20mm 2PIN (Pack of 4Pcs)

10pcs HEPA Filters Replacement for ILIFE V3s V3s pro V5 V5s V5s Pro V5s Pro 2 V5s Plus Noisz S5 Robotic Vacuum Cleaner ILIFE V3s pro Filters ILIFE Robot Vacuum Filter

100pcs 3D Printing Brass Nuts, M3x4x5mm M3 Threaded Insert Knurled Brass Nuts Female Thread Knurled Heat Embedment Nut for 3D Printing Parts Loptop Automotive Plastic Shell