1x Plastic compression sleeve for original Geco door mirrors, to help retain position of mirror arm.
This is the original Geco part that fits into the mounting block, around the arm. (Nobody else sells this part separately).
If when driving faster, the wind blows your mirror arm back and this can not be cured by tightening the two little tension screws in the mounting block, then you probably just need to replace this plastic sleeve.
The mounting block shown in photos is not included. Sometimes the mounting block can be cracked alongside the arm tube, which can also cause reduced tension on the arm. We can supply a mounting block kit, (which includes this sleeve): see 'Related Products' above.