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![HO Bachmann E-Z Command 33" Flat Back Wheel Sets 42904 - MPM Hobbies](http://mpmhobbies.com/cdn/shop/files/ho-bachmann-e-z-command-33-flat-back-wheel-sets-42904-mpm-hobbies_436x436.jpg?v=1705837864)
- replacement wheel sets with needle-point bearings
- blackened metal
- NMRA wheel contours
- 12 per card