Marerial:  alloy + PU leather
inner ring diameter: 3-4cm

Round Gags 
They are quite popular types of gag rings. O-ring gags or mouth-ring gags due to the circular shape in which they place their mouths. This gag increases access to the inside of the mouth while increasing airflow and reducing the possibility of choking. Because sizes can vary depending on the product, you may decide to buy a larger one, make things more interesting by adding a dildo, and keep the play exciting by introducing toys sex is not as dangerous into the submissive's mouth as it is with open mouth gags.