This adapter fits into the end of the older 20v Black & Decker leaf blower, model LSW221.
Note that this fits inside the end of the blower, not the outside. This makes it slimmer and saves material, but the trade-off is it doesn't seal quite as well.
Print upright at 0.3 layer height and it should finish in under 3 hours. No supports needed, but a brim is recommended. The three uploaded file formats are all the same model.
The author marked this model as their own original creation.