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...

STUDCOLLAR-SUPER-O is a stretchy 'O' ring in various colours. The unstretched ring is 15mmID and the wall is 10mm. However, the ring will easily stretch to over 100mmID and exert a lot of pressure. This listing is for THREE rings.

STUDCOLLAR-SUPER-O is a stretchy 'O' ring in various colours. The unstretched ring is 15mmID and the wall is 10mm. However, the ring will easily stretch to over 100mmID and exert a lot of pressure. This listing is for ONE ring.