... 136kg/0.3m expandable conveyor1,HD casters with brake.5 heavy duty caster with urethane tire & brake, features easy handling, ... service expectancy, especially for high density usage, impact loading and heavy cargo handling.3,Side Plate. ribbed aluminium alloy (standard), ... coated carbon steel (optional)4,Square tube legs..double heavy duty square tubing legs for easily height adjusting, longer service ...