Dana Spicer HD 1350 Series U-Joint - Non-Crossdrilled STGU1641. It is my understanding that the HD stands for Heavy Duty. Photos are of the actual item offered in this listing.
The box has been opened, the U-joint comes with the two unopened bag of C-clips as pictured.
Feel free to reach out with any questions.
In most cases this will ship USPS Ground Advantage.