Tiny 3/64in. sheaves and shackles are used for miniatures and hidden small rigging. Pulleys in our 3/64in. sheaves turn on a shielded precision ball bearing. L to R: shackle, shielded ball bearing, pulley, complete sheave. Often used for laying out big cable rigs. The history on these was that we designed them for a scene in 'Arachnophobia' (1990)to pull prop spiders from under the covers of the bed.