Profile: Engineered Products specializes in storage and material handling. Our product catalog comprises of workbenches, lockers, conveyors, packaging machinery, pallet racks and wire enclosures. The gravity roller conveyor is available in 1-3/8", 1.9", 2.5" and 3.5". The rollers feature labyrinth-sealed, grease-packed ball bearings. The spiral curve conveyors feature all-metal construction, and have a positive direct drive belt to eliminate slippage. They are available in arcs from 15 to 209 degrees.