... brush:Using 0.1-0.2mm fine wire made of DuPont nylon ,a very excellent wear resitence and flexibility ... 45#round steel or stainless steel, machinery flocking, to use for clean and polish with wax.. Food ... two corresponding by bump for a group of brush roller, easy to clean, also to achieve better cleaning effect.Good ... brush silk does not turn back!if you want to send you sample, that is no problem, if ...