Rod End Standard Series Steel RH OR LH Female Two-piece spherical rod ends have a pivoting steel ball and are sold each. 

1/4" x 1/4"-28  2,835 Lbs 

3/8" x 3/8"-24  6,323 Lbs 

1/2" x 1/2"-20 10,046 Lbs 

5/8" x 5/8"-18 15,488 Lbs 

3/4" x 3/4"-16 15,894 Lbs