Tascam 112 244 and many others idler tyre assembly
They are widely used in the Tascam Cassette units and Portastudios
Wlil have whatever tyres were on it or blank separate tyre new are listed elsewhere
Seen In( but not limited to)
Tascam 112
Tascam 244
You will need to order 2 new idler tyres for these