The file 'Creality CR10S Improved Bed Level Mount For Fan-Mod 3D Printer Model' is (stl) file type, size is 111.3KB.
This special holder is adapted for the fan-mod https://www.thingiverse.com/thing:2806484
Original Design without Fan adaptation: https://www.thingiverse.com/thing:2815165
Use a M6 metric Bolt and Nut (wrench size 10mm)
Leveling_Mount_+Fan.stl | 383.5KB |