... price Free roller conveyor optional parts:castors,side guide,handle and stop>>detailsFree roller conveyor detailed information:1.surface treatment:zinc ... plating,chroming,rubber coat,Pu coat,teflon and so on,accept customers'request.2.roller diameter:19mm, ... ,60mm,76mm3.roller material:carbon steel,SUS304,SUS201,Al,PVC and PU coat. Tailor made free rolling conveyor, no power ...