Made of Stainless Steel Weight: 12 grams The sizes of the ring available are US size 9 ,10 & 11 US 9 : Inside diameter (0.746") / Inside circumference (2.34") US 10 : Inside diameter (0.778") / Inside circumference (2.44") US 11 : Inside diameter (0.81") / Inside circumference (2.54") JUSTIFIED HORSESHOE RING. US 9 : Inside diameter (0.746") / Inside circumference (2.34") US 10 : Inside diameter (0.778") / Inside circumference (2.44") US 11 : Inside diameter (0.81") / Inside circumference (2.54")