The file 'Adjustable Z Axis Belt Tensioner For The Anycubic Kobra 2 3D Printer Model' is (stl) file type, size is 53.4KB.
Once you printed the two piece you will need:
-2 M4x8 bolts.
-1 M4x30 bolt and nut
-2 F688ZZ Flanged Radial Ball Bearings (cheap at Amazon)