Ring Creation

AU Size	US Size	Circumference	Diameter
K	5	49.4mm	15.70mm
L	5.5	50.6mm	16.10mm
M	6	51.9mm	16.51mm
N	6.5	53.1mm	16.92mm
O	7	54.4mm	17.32mm
P	7.5	55.7mm	17.73mm
Q	8	57.0mm	18.14mm
R	8.5	58.3mm	18.54mm
S	9	59.5mm	18.95mm
T	9.5	60.8mm	19.35mm
U	10	62.1mm	19.76mm
V	10.5	63.4mm	20.17mm
W	11	64.6mm	20.57mm