Removes installs cylinder end Stopper on '04 - '09 Lexus RX330 RX350, plus '004 - '07 Toyota Highlander. Allows steering rack to remain in vehicle without using a screwdriver and hammer and prevents damage to cylinder. Use with 3/8 square drive tools. California prop 65 - warning, this product contains chemicals known to the state of California to cause cancer, birth defects or other reproductive harm.