GR55 Light tension
1-st .028 / 2-nd .032 / 3-rd .040
4-th .028 / 5-th .033 / 6-th .042
GR 65 Normal tension
1-st .029 / 2-nd .033 / 3-rd .041
4-th .029 / 5-th .034 / 6-th .044
GR 60 Hard tension
1-st .029 / 2-nd .033 / 3-rd .041
4-th .030 / 5-th .038 / 6-th .045