... factory 2.Material:Steel, Pvc, Rubber, Al, SS 3.Various roller conveyors 4.Good quality and competitive price Free roller conveyor ... optional parts:castors,side guide,handle and stop>>detailsFree roller conveyor detailed information:1. ... steel,SUS304,SUS201,Al,PVC and PU coat. Tailor made free rolling conveyor, no power conveyor, no motor conveyor factory