SIZE INFO SIZE #7: Inside Diameter is 0.68(inch), Inside Circumference is 2.1(inch) SIZE #8: Inside Diameter is 0.71(inch), Inside Circumference is 2.2(inch) SIZE #9: Inside Diameter is 0.74(inch), Inside Circumference is 2.3(inch) SIZE #10:Inside Diameter is 0.77(inch), Inside Circumference is 2.4(inch) SIZE #11:Inside Diameter is 0.81(inch), Inside Circumference is 2.5(inch) SIZE #12:Inside Diameter is 0.84(inch), Inside Circumference is 2.6(inch) SIZE #13:Inside Diameter is 0.87(inch), Inside Circumference is 2.7(inch) How to measure finger size please check the last picture of the product! MATERIAL 100% high-end stainless steel
