Based on the same model: https://www.cgtrader.com/3d-print-models/jewelry/pendants/tennis-racket--2
So I want to describe it with the same text: STL+3DM files of tennis racket (or racquet) intended for perdant or pin 30x12.4mm Model was used many times for production. So it's proven.
Stl file contains no errors.
Model size without sprue is 30x12.4mm (ca 1.2x0.5 inches).
Model volume (without sprue, bail and earring parts) is 125mm^3.
Model weight (except bail and earring parts):
~1.25 for sterling silver; ~1.7 for 14K gold; ~1.9g for 18K gold.
OBJ format (and dumb technically not informative text) added just for stupid CGtrader's rating recomendations and not tested.
Because I made models not for advertising, rendering or other visual unusual shit but FOR PRODUCTION.