Both sides are concave.
Approx 7/16" wearable area
1-3/8" has 1-1/2" flares
1-1/2" has 1-5/8" flares
1-5/8" has 1-3/4" flares
1-3/4" has 1-7/8" flares
1-7/8" has 2" flares
2" has 2-1/8" flares
2-1/4" has 2-3/8" flares
2-1/2" has 2-5/8" flares
Temporarily out of stock items (or items with only 1 left):