3 model

Free

Snap On Dial Indicator holder for 2020 v-slot with 12 mm linear rail

Thingiverse

Free

Snap-in V-slot Covers for Ender 3 Power Supply Rail

Thingiverse

Free

3018 Rail Snap-on Durst Cover (also 1610, 2040, 2418,... series)

Thingiverse