High quality, heat treated forged steel replacement U-joints. The endcaps on the 3-5/8" width side have grooves for "inside clips." There are no grooves on the 3-7/32" width endcaps, therefore that side MUST use external clips. All four clips included.
Chevy to Ford
D 1-1/16" x W 3-7/32" & D 1-1/8" x W 3-5/8"