Two caged sets of 4 axles of scale 3' diameter 3-hole disc wheels for TT120 models, in particular my 9' wheelbase steel solebar mineral wagon chassis and 12' wheelbase steel solebar conflat-B chassis. Should be interchangeable with standard metal TT120 wheels. To get the wheels out, carefully cut the thin sprues which join them to the frame of the cage (four behind each wheel) and then snip the short bars of the cage outside the wheel, again taking care not to clip the flange. The cage should then flex enough to let the axle out. Gently smooth the backs of the wheels where the thin sprues were cut, if necessary.