This ring boasts a perfectly finished carbon insert in the middle. Who would ever handle such braids "nice" / had to know where the difficulties lie here. Although - as described in other reviews - small adhesive residue at the abutting edges between the ring and insert to see and feel, this can be completely removed by fingernail but with caution and processing. Fascinating is the absolutely flat surface !!! The ring is perfect and comfortable to wear due to the excellent rounding the inside, thus: TOP !!!