Rings measure:
1" Inside Diameter 1 1/2" Outside Diameter
1 1/4" Inside Diameter 1 3/4" Outside Diameter
1 1/2" Inside Diameter 2" Outside Diameter
1 3/4" Inside Diameter 2 1/4" Outside Diameter
2" Inside Diameter 2 1/2" Outside Diameter
2 1/4" Inside Diameter 2 5/8" Outside Diameter

Harness measures the following:
From the front yoke over the head to the back buckle 16" longest and 11" Shortest.
All the way around the of head under the chin 32" Longest 21" Shortest.
Around the back of the head from end of ball to end of ball 18" Longest 13" Shortest

All Ring Sizes are given BEFORE they are dipped and WILL vary in size as a finished product by 1/8 inch or more