Ring has 3 sizes (inner diameter) can be selected: 1.57'' (40 mm), 1.77'' (45 mm), 1.97'' (50 mm).
Total length is about 1.85'' (47 mm).
Cage inner diameter is about 1.3'' (33 mm).
Drain tube diameter is about 0.31'' (8 mm).
These sizes may have a little error because it's made by hand.
Weight is about 140 grams.