For difficult to remove, seized, rusted and/or corroded bolt-in ball joints Designed for easy use with vehicle on jack stands using a deep 24mm socket and impact or hand wrench Or use included 5/8-18 thread adapter with any common slide hammer Unique sliding pin non-rotating design removes ball joints in a single pulling motion without spinning the ball joint stud, reducing the chance of ball joint breakage Compatible with Subaru Baja 2003+, Forester 1998+, Impreza 1993+, Legacy 1990+, Outback 2000+ and more, Manufacturer: Astro Tools