stop-bush is part of:

stop-bush contains:

Full expansion for stop-bush:
   100%  1x1x1 Technic Stop Bushing
    80%  3L Technic Friction Peg w/ Stop Bush
    20%  1x1x.5 Technic Pulley w/ Toothing
    20%  1x1x.5 Toothless Technic Pulley