right rings are made of metal, metal expands in heat so this is coming from my oh by the way to put them in warm to mid hot water to expand for a few minutes then to put your arm up to reduce blood flow, then to rub around the area a cold oil either sun flower or something of that nature and then get someone to pull it off and twist at the same to help plus the oil wont damage your finger with it already been sore. he said if that doesnt work then see a doctor as it could damage nerve's in your fingers x x x let us know if it works cheers x x x