B-3220-04-02 - 1/4" x 1/8"
B-3220-06-02 - 3/8" x 1/8"
B-3220-06-04 - 3/8" x 1/4"
B-3220-08-02 - 1/2" x 1/8"
B-3220-08-04 - 1/2" x 1/4"
B-3220-08-06 - 1/2" x 3/8"
B-3220-12-02 - 3/4" x 1/8"
B-3220-12-04 - 3/4" x 1/4"
B-3220-12-06 - 3/4" x 3/8"
B-3220-12-08 - 3/4" x 1/2"
B-3220-16-06 - 1" x 3/8" 
B-3220-16-08 - 1" x 1/2"
B-3220-16-12 - 1" x 3/4" 
B-3220-20-06 - 1-1/4" x 3/8"
B-3220-20-08 - 1-1/4" x 1/2"
B-3220-20-12 - 1-1/4" x 3/4"
B-3220-24-08 - 1-1/2" x 1/2"
B-3220-24-12 - 1-1/2" x 3/4"
B-3220-32-12 - 2" x 3/4"
B-3220-40-24 - 2-1/2" x 1-1/2"

This brass hydraulic pipe fitting adapter is equivalent to the following:
-SAE 130140
-Eaton Weatherhead 3220