(female-female)

Diameter Diameter Part No.       Pack. Unit
3/4" 5/8" 612502168       50
7/8" 3/4" 612502128       30
1-1/8" 7/8" 612502129       25
1-3/8" 1-1/8" 612502130       15
1-5/8" 1-3/8" 612502150       15
2-1/8" 1-5/8" 612502194       10

(female-female)

Diameter Diameter Part No.       Pack. Unit
3/4" 5/8" 612502171       130
7/8" 3/4" 612502137       125
1-1/8" 7/8" 612502138       50
1-3/8" 1-1/8" 612502139       35
1-5/8" 1-3/8" 612502153       30
2-1/8" 1-5/8" 612502197       20