You are buying a 1310 series greaseable universal joint made by Neapco.
Neapco Part# 1-0153.
Features and Benefits: Long-life seals — Resist heat, keep out contaminants and help maintain lubrication. Tight tolerances and precision grinding of journal trunnion radii — Eliminates potential stress risers which can lead to premature failure. Precise case hardening — Heat treating processes increase universal joint strength and durability. Zerk (grease) fittings — Allow for ease of lubrication.
Dimensions A = 3.219 B = 3.219 C = 1.062 D = 1.062 OUTSIDE Snap rings.