luminova11

Hi Looking for a little information. Need to completely replace the rear calipers on my 2004 Meriva. However, none of the calipers I can find have the rubber wheel on the handbrake cable mounting. What are these called as they also need replacing and i cant find them anywhere, or are they not really needed? I've worked on dozens of cars over the last 35 years and have never come across a caliper with these on. Many thanks