JORESTECH Gravity Expandable Roller Conveyor This item is shipped via Freight. Can take more than 5 business days. Includes four height-adjustable arches with brake-equipped casters. Powder coated metal construction Self-standing. Can connect to additional conveyors of the same type to span greater distances Flexible - can be used straight or curved. Compacts with ease when not in use Heavy duty square tubing legs for a longer service life. Does not require electricity or compressed air