The square/oblong plastic finisher that goes on the door where the safety lock is located on Mk3 1970 on cars with wind up windows. This is the original style which changed on the SPI and then again on the MPI. If you have a SPI or MPI from 1991 on, you will need to buy a pair if you want to keep both sides identical. The picture shown is the last one produced by Rover for the MPI which is obsolete. The SPI cars from 1991 had a similar shape to the earlier type we sell but had a more rounded and rolled outer surround.