Parts such as the F-4: Collar A,hndl Set, Pipe,strg Handle, Bolt-washer,6x28, Nut,u,flange,10mm are included in the Nps50 Zoomer.dx 2009 (9) Japan Af58-180 F-4 parts fiche.
Check out any of the nine F-4 components enlisted.
The F-4 assembly is constructed from several parts from which the Post Comp,hndl is the most expensive.