Up for sale is a RARE SET of 4 Ball Joints.  Purchase price is for 2 Upper and 2 Lower Ball Joints, enough for one truck.  Quality aftermarket parts manufactured years ago right here in the USA.  Grease fittings, cotter pins, and castle nuts included.  These will fit the following:

1960-1962 Chevrolet 1 Ton & 1 1/2 Ton Truck models C30 , 3600, C40 , 4100, 4300

1960-1962 GMC 1 Ton & 1 1/2 Ton Truck models 2500, 3000