I-Anti-shock ring, Ibhendi ye-ID ye-Elastic, indandatho yombala, iringi enguRubber
I ngetshe plastic kungaba anti-ukushaqeka indandatho kungaba sesikhashana bashayisana phakathi namakani ngetshe, okuyinto kuqinisekisa roundness we amathini ngetshe kangcono, futhi ezihlukahlukene imibala ongakhetha kuzo. Kuyinto isifundo sibe ukuphathwa zokukhiqiza indawo futhi kuthuthukisa ukuphathwa ezingeni kwamabhizinisi.
Zisetshenziswa ama-spinner ukusiza ukugcina imicu ehlukahlukene kanye nemisipha kuhlukanisiwe. Osayizi atholakalayo kungaba kububanzi obungu-1 noma 2 kubaculi abalandelayo: 16 ", 18", 20 ", 24", 28 ", 30", 36 "40" no-48 ". Imibala eqinile kuphela - bona imibala etholakala ngezansi.