Rod Ends

Various Rod Ends
left column
M5 Female and M5 Male rod ends with oiling nipples - from Simply Bearings
centre column
M6 at top, below M5 ends - from RS components
then
M5 Femail, M5 male - from McGill Motor Sport
M4 Femail, M4 male - from McGill Motor Sport
M3 Femail, M3 male - from McGill Motor Sport
right column
M6 plastic female - from IGUS
M5 link rod showing it doesn't need to be straight, can be bent to go round things
M5 plastic female ends on an M5 threaded link - from IGUS
M3 plastic female ends - ends from IGUS
to the right are an M4 aluminium female end with brass ball - from Conrad (Germany)
and an M3 aluminium female end with brass ball - from eBay China
various sizes are available from China - you have to hunt.
M2 plastic female ends - from IGUS
and an expensive Swiss M2 male screwed into an expensive Swiss M2 female end.
Below are various rod ends for Radio Controlled Models - from Model Shops