STUDCOLLAR-SILICONE-DOUBLES is a pack of TWO super strong as steel silicone rubber rings. Simply choose two of the same size or two different sizes. They are flexible but they have almost no stretch' so they offer the same strength as a metal ring.

STUDCOLLAR-SILICONE-INDIVIDUAL 50mm ID are super strong as steel rubber rings. They are flexible but they have almost no stretch' so they offer the same strength as a metal ring.

STUDCOLLAR-SILICONE-INDIVIDUAL 45mm ID are super strong as steel rubber rings. They are flexible but they have almost no stretch' so they offer the same strength as a metal ring.

STUDCOLLAR-SILICONE-INDIVIDUAL 38mm ID are super strong as steel rubber rings. They are flexible but they have almost no stretch' so they offer the same strength as a metal ring.

STUDCOLLAR-SILICONE-INDIVIDUAL 32mm ID are super strong as steel rubber rings. They are flexible but they have almost no stretch' so they offer the same strength as a metal ring.

STUDCOLLAR-SILICONE-INDIVIDUAL 25mm ID are super strong as steel rubber rings. They are flexible but they have almost no stretch' so they offer the same strength as a metal ring.

STUDCOLLAR-SILICONE-INDIVIDUAL 19mm ID are super strong as steel rubber rings. They are flexible but they have almost no stretch' so they offer the same strength as a metal ring.

STUDCOLLAR-SILICONE-SINGLES is a pack of SIX super strong as steel silicone rubber rings. The rings have the following IDs - 19mm, 25mm, 32mm, 38mm, 45mm and 50mm. THey are ideal to find out which size is right for you. They are flexible but they have almost no stretch' so they offer the same streng...