It is completely different from the original use, but it was used for the dust protection of the pyro section of HKS car harmonic.
On 2018-11-29 17:42:50
It is perfect for the nut (surface width 21 mm) of the pillow section of the upper part of the car height of HKS.
I expect that dustproof is possible because the head part covers the bottom.
It is impossible to install it unless you are in an inverted or no adjustable part.
I do not think anyone will do this using ...