BEARING BUSHES 9mm SHS (ZT0020)

9 mm bearing bushings.
open model with oversized balls.
the thickness of the bushings is 2.5 or.
exactly that of the gear box then.
they do not come out and do not interfere.
with the movement of selector plate etc.
x compatible marui.
they mount on all gear boxes.
which include 9mm bushings.