Kodi mayendedwe a Ball Bearings Ball ndi ena mwa mayendedwe omwe amagwiritsidwa ntchito kwambiri, ndipo kapangidwe kawo kowongoka kamalola kugwiritsa ntchito mosiyanasiyana. Amagwiritsidwa ntchito kwambiri ngati ma wheel bearings ndipo amapezeka m'magalimoto, njinga, ma skateboards, ndi ma ...
Werengani zambiri