Precision machine work and quality materials put JOES A-Arms in a class of their own. Economical bushing style with Screw-in Ball Joint and Aluminum Shaft. 11-1/4" long from center of shaft to the center of the ball joint ring. The bolt holes are ½" and they are spaced 6" between centers. The ball joint ring is tilted 10 degrees to keep your ball joint from running out of travel.