Control Arm Shafts UPPER: 58-64 Chev/ Paris full size (pr)This link or shaft runs across the upper control am.. the bushes push through each end and then the shaft is bolted to the frame. Often this can come loose too so really keep it in the back of your mind when looking over the car at times.. that is firm.. that none of the wheel Alignment shims for instance have gone walkabout. This is a PAIR set.. brand new as shown. Fits 1958 64 Full size Belair, Impala, Parisienne, Larentian, 59 & 60 El Camino too.