This Cam Bolt Kit is a replacement for the OE adjusters. The OE bolts on Toyota trucks and SUV's are frequently "frozen" and do not allow for adjustment. Remove the frozen bolt assembly and replace it with an SPC cam kit to get up to +-1.5 degrees camberand caster change. OE adjuster assemblies that are corroded may require SPC's press tool 40915 for removal, making the job quick and easy. California Residents WARNING