Screw-In hybrid GM lower ball joint. This is the most common asphalt late model lower ball joint. 2″ Taper, racing applications are Howe, Rayburn, GRT, Warrior, Hamke, FLF and Port City. Also used by many dirt cars that use a 6141 ball joint pin and have a screw-in lower A-frame. Howe ball joints offer very low resistance while still fully capturing the ball to maintain alignment. All Howe ball joints are user rebuild able with an unmatched selection of interchangeable studs and housings.