Could not get a wheel alignment for Mitsubishi L200 ute due to worn bushes on front. what are these?

the bushes are on the suspension arm (rubber dampers that allow for slight movement in the suspension) on certain cars they can only be replaced as a whole (wishbone/suspension arm) , when there perished,spliiting, ect.. there is play in the bush. if you get the tracking done with them in this condition it wont be long before the tracking is out again, i always recommend replacing them as a pair as the other usually is not far behind