... castors,side guide,handle and stop>>detailsFree roller conveyor detailed information:1.surface treatment:zinc ... and so on,accept customers'request.2.roller diameter:19mm,22mm,28mm,38mm,42mm,48mm ... ,50mm,57mm,60mm,76mm3.roller material:carbon steel,SUS304,SUS201,Al,PVC ... PU coat. Welcome to visit our factory. free roller conveyor, gravity roller conveyor, no motor roller conveyor, free ...