Getting the ball-joint stud to come out of the spindle can be a difficult task. We installed this two-jawed puller onto the spindle and now we pre-load the tool with a fair amount of force. This is a nice tool, worth about $100. It has side-load bolts, which can be tightened to allow a firm grip of the spindle eye, and it fits the task perfectly. We're not super-tight on the tool, but we're pressing down on the ball-joint stud firmly.