You guys must have gotten out of the wrong side of the bed today. They still spin just fine for 25+ years of hard use, thank you. Just for grins I decided to take it apart. End cap pops off, threaded spindle. 10mm nut followed by a washer followed by a 12mm nutted race. Removeable spindle. A good set of little ball bearings on both sides. Maybe Taiwanese but not annoyingly cheap.