Important:
Due to existence of various different V-Nut profiles and thicknesses, this End-Cap is made for the profile provided here (beside, as stl-file), to stick tight.
A thumb-rule to fit your own profile is to decrease the insets on each side 0.05mm, so about ~0.1mm from end-to-end in relation to the hole.
If f.ex. the hole-distance from end-to-end measures 17mm, the corresponding inset has to have a width of about 16.9mm.
They sit tightly inside the nut, so insert the caps hammering smoothly on its 4 corners.

Creality

Ender 3

No

No

200

38