60x60x10mm Slimline 12V DC Fan - Oil Bearing

40 x 40 x 20 mm, 12V Brushless DC cooling fan - Oil...

Note: NODEMCU V3 WiFi module integration of ESP8266 + extra 32Mb  Flash, USB serial, CH340G - Type 1 / CP2102 - Type 2. 

30x30x10mm, 5VDC cooling fan

60x60x10mm, 24V Brushless DC cooling fan

Heat bed insulation foam for 3D printers. Stick on backing for easy installation. Can be easily cut to size with scissors.

Stepper Motor 28BYJ-48 (5V) with Reduction Gearbox