Replace frozen or worn lower control arm bolts with SPC's replacement adjusters. Designed for the rigors of Ram heavy duty trucks, these high strength bolts come with a corrosion resistant coating for long life. Adjust caster or pinion angle by +-2.0deg todial in your alignment settings or to correct for a suspension lift kit. SPC uses a hex chromate free finish and offers a 700hr salt spray test for the best corrosion protection available. California Residents WARNING