This is a USED Aluminum U - Joint drive for the Quickchange on a Sprint car.
Sprint Car,TITANIUM BOLT U-JOINT TO CRANKSHAFT
Sprint Car,TITANIUM U-JOINT TO CRANKSHAFT bolt kit
Aluminum U Joint Girdle Set for 1350 U-joint G1350K
Aluminum U Joint Girdle Set for 1310 U-joint G1310K
Vega Steering Universal U-Joint Coupler 3/4 slip x 5/8 -36 Spline Sweet U joint
Sweet 401-51221, One Black Steel U-Joint 3/4-20X3/4-36 Performance Racing Parts