light capacity roller conveyor is be used in factory to ... OPTIONS IN MATERIAL: •Optional Roller Types: zinc-plated roller, chrome-plated roller, rubber-coated roller, stainless steel roller, plastic roller, etc. •Optional Frame Material ... OPTIONS IN MATERIAL:Optional Roller Types: zinc-plated roller, chrome-plated roller, rubber-coated roller, stainless steel roller, plastic roller, etc.Optional Frame ...