Snap-Loc E-Track Dolly Extension Bar Set extends the height of push bars and panel bars for easier control when moving taller cargo and oversized loads. Built-in connectors allow quick attachment, and the system converts push bars into a panel bar setup for added containment and transport of larger items like lumber and pipe. Made from heavy-duty 1-1/4” industrial steel with a powder-coated finish, this durable design assembles quickly and stores compactly.