Model created in Zbrush. It is watertight and ready for printing/milling. It was created with molding and casting in mind.
INNER DIAMETER: 22 mm
Inlcudes a 2 Mil and a 750 k polygon STL (triangles).
Nominal size (although easily adjustable in any 3D software) is:
24.75 mm wide/ 8.44 mm tall / 25.41 mm deep/ volume: 0.76 cm3