Ring has 4 sizes (inner diameter) can be selected: 40 mm, 45 mm, 50 mm, 55 mm.
Cage diameter is about 22 mm, ball diameter is about 22 mm.
Metal tube length is about 24 mm, diameter is about 10 mm, please choose "Type2" option if you need it.
Silicone tube length is about 137 mm, diameter is about 6 mm, please choose "Type3" option if you need it.
Please watch the detailed sizes in the pictures.
These sizes may have a little error because it's made by hand.
Weight is about 150 grams.