You are getting one Genuine Spicer 1350 Series Double Cardan CV Centering Yoke 212019X and 3 Spicer 5-178X Universal Joints Transfer Case to Rear Axle
Socket Yoke Specifications - 212019X

| U-Joint Series | 1350 | |
| Bolt Circle Diameter | 3.625" | |
| Hole Pattern Width | (A) | 1.625" |
| Hole Pattern Height | (B) | 2.750" |
| Bolt Hole Diameter | (C) | .312-24T |
| Centerline of Joint to End of the Spline | (E) | 1.757" |
| Ball Stud Size | 0.500 | |
| Notes | Non Greasable |
Genuine Spicer Universal Joint 5-178X

1350 Series
U-Joint Style: Outside Snap Ring
(D) Cap Size: 1.062"
(D1) Cap Outside Diameter: 1.188"
(G1) Distance between Retainer Rings: 3.625"
(D2) Cap Outside Diameter: 1.188"
(G2) Distance between Retainer Rings: 3.625"
Greasable: Yes