Genuine Spicer 1310 U-Bolt Kit.
Suit all 1310 Pinion Yokes, Ford, GM, Dana Axles etc etc
*1310 Universal Size is 82.00mm x 26.99mm (1-1/16" Cups)
Measurements from the Drawing
"A" = 50.00mm (1.969")
"B" = 35.72mm (1.406")
"C" = 5/16"-24UNF
"D" = 26.99mm (1.038")