Ring Size Guide

To determine your ring size wrap a strip of paper around the finger on which you would like to wear the ring and mark where the paper crosses over.

Measure the paper up to where you marked it to find out the outside circumference of your finger, then look at the chart below and match the circumference of your finger to the nearest inside ring circumference.

For example, a circumference of 62 mm (2.44 inches) would be a ring US size 10.

Thunder Shock rings are available in different sizes. US sizes are stated in the drop down list in the purchase box at the top right of the product page. Once you know your US ring size, you can select it here.

Inside Diameter		Inside Circumference		Sizes
(in)	(mm)	(in)	(mm)	US/Canada	UK/Aus	Japan
0.706	17.93	2.22	56.3	7¾	P
0.714	18.14	2.24	57.0	8	P½	16
0.722	18.34	2.27	57.6	8¼	Q
0.730	18.54	2.29	58.3	8½	Q½	17
0.738	18.75	2.32	58.9	8¾	R
0.746	18.95	2.34	59..5	9	R½	18
0.754	19.15	2.37	60.2	9¼	S
0.762	19.35	2.39	60.8	9½	S½	19
0.770	19.56	2.42	61.4	9¾	T
0.778	19.76	2.44	62.1	10	T½	20
0.786	19.96	2.47	62.7	10¼	U	21