Tascam M3500 fader metal Panel 8 way These are used widely in

These are used widely in all the older Teac models later ones don't have the thread although they should all be compatible in most cases

285mm on the left one

though not normally an issue as your taking the old one out

This roller seems larger than the R8 although it may just be less worn or the R8 wheel is closer to the capstand so does not have to travel so far

Tascam M3500 fader metal Panel 8 way These are used widely inPanel from the M3500 , these are showing signs of age, they clean up not bad but all show some signs of rusting at bottoms or sides simply because the paint has chipped of or got dirty but maybe someone has even worse than these in that case they are useful these are 8 way other bigger listed on its own