... .1-0.2mm fine wire made of DuPont nylon ,a very excellent wear resitence and flexibility ,this product is ... .3.steel tube material is 45#round steel or stainless steel, machinery flocking, to use for clean and polish with ... does not turn back!if you want to send you sample, that is no problem, if we have your need ... size, we are free to send you, if we ...