OTC 7491C Upper Control Arm Knock-out Tool Removes the inserts on upper control arm alignment brackets New and improved design has a self-centering knock-out for full punch removal with less tear Services 1989-2001 Chevrolet and GMC 1/2 3/4 and 1-ton 2 and 4 wheel drive trucks and 1990-2002 all-wheel drive Chevrolet Astro and GMC Safari vans Lifetime limited warranty