This is a 98mm long diffuser for the Maglite D-cell (and most others that have a 57mm/2.25inch head).
It fits 18mm over the top of the head (securing a good fit), giving 80mm of diffuser space (see picture).
Print in vase mode, as oriented in the stl.
Material: PLA (red)
Line height: 0.2
Line width: 0.8
The author marked this model as their own original creation.