Heavy duty expanding conveyors have heavy duty steel square tubing zinc plated legs that offer longer service life and stability. Product also includes welded horizontal leg brace, 5" X 1 1/2" casters for easy movement, and heavy duty retractable package stop. There are 2 total lock brake casters on each end that stabilizes conveyor while in use. 11 gauge steel side inks are assembled using steel pin and retaining ring. Conveyor has 5/16" diameter axle across the width. Self-tracking design allows packages to follow the path of the conveyor without using guards. Couplers easily connect two or more conveyors to span greater distances.