| Ring depths are designated as follows: |
| A . . . . . . . . . .19/64" (7.5 mm) |
GE . . . . . . . . . . 21/32" (16.7 mm) |
| D . . . . . . . . . . 5/16" (7.9 mm) |
H . . . . . . . . . . . 11/16" (17.4 mm) |
| E . . . . . . . . . . 3/8" (9.5 mm) |
J . . . . . . . . . . . . 1" (25.4 mm) |
| C . . . . . . . . . . 13/32" (10.3 mm) |
M . . . . . . . . . . . 1 1/4" (31. mm) |
| K . . . . . . . . . . 7/16" (11.13 mm) |
CK . . . . . . . . . . 7/16" (11.1 mm)* |
| L . . . . . . . . . . 1/2" (12.7 mm) |
CG . . . . . . . . . . 43/64" (17.0 mm)* |
| G . . . . . . . . . . 43/64" (17.0 mm) |
CJ . . . . . . . . . . . 1" (25.4 mm)* |
| *metal insert |