Size Chart for Accessories

42 44 46 48 50 52 54 56 58 60 62 64 66
Diameter MM 13.4 14.0 14.5 15.3 15.9 16.5 17.2 17.8 18.5 19.2 19.8 20.4 21.0
Circle MM 42.13 44.14 45,74 47.97 49.95 51.87 53.82 55.76 58.21 60.38 62.33 64.21 66.22
Italy 2 4 8 9 11 13 15 17/18 18/19 20 22 23 25