This arthritis finger splint ring will help to straighten your joint. You can use it for the all types of deviation. Just put it in the correct position. You have to measure your finger at the knuckle you need to support. This will be the ring size. ● Please don't mix circumference and US ring size! In my ordering table you will see first US ring size, then - circumference in inches and mm. ● If you have any problems with measurements, just contact me! ❤ MY DEAR CUSTOMERS, WHEN YOU FILL YOUR ORDER, PLEASE WRITE ME IN THE NOTES YOUR PHONE NUMBER FOR THE SUCCESSFULLY DELIVERY! ❤ I am not a doctor, I just try to help people and I am really very happy I have so many grateful customers. So please ask your therapist before ordering. If you have any questions, please contact me!