Orignal Pitman Arm- Reballed. Exchange. We cut off the worn ball, but leave a stud. Then we get a stanless steel ball bearing, bore a hole in it, press it on the remaining stud, tig weld it on, and you have a perfect round ball that will last a long time. It also looks stock when installed. There will be a $20 core charge added to the price of the arm until we receive your good core.