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Product Description
This item is designed to hold a roughly one and half inch diameter ball or a decorative egg for display. It could be a golf ball or something more magical.
The stem of the holder is designed to fit into a 0.25 inch diameter hole. (The stem is drawn with a 0.248 inch diameter.)
The idea here is that 3D printing can be expensive so you're better off using a piece of wood, plastic, or other cheap material to use as a base for the cup.