From left to right in both photos are a 1310, 1330, 1350 and Saginaw-style double-cardan driveshaft. You can see that the Saginaw joint has thinner construction than the 1330 joint at the crosses, even though its caps are larger. There are several different end types that can be put on a double cardan. The two on the left are CV socket yoke-type for use with a pinion or T-case CV yoke. The two on the right are CV socket flange-type for use with a pinion or T-case CV flange.