Ball transfer units; Ball transfer table units; Compressed air machine components, namely, cylinders, valves and air grips; Die-stamping machines; Machine tools, namely, clamps for use in the precision clamping of work pieces; Machine tools, namely, jaws for use in the precision clamping of work pieces; Machine tools, namely, vices for use in the precision clamping of work pieces; Machines and lines composed thereof for the production of automobile parts, parts for the aforementioned machines, particularly foaming lines, die-cutting machines, molding presses, scoring machines, laminating machines, water jet cutting machines, milling machines, long fiber injection machines, parts for the aforementioned machines, particularly foaming tools, die-casting tools, die-cutting tools, molding tools, laminating tools; Manipulators for forging presses and for forging machines; Molding and die-casting tools, namely, molding presses, being machine parts for dies and molds; Pneumatic linear actuators; Pneumatic ball transfer units; Pneumatic ball transfer units for use in carrier device; Rail switch for an industrial conveyor assembly comprising straight and curved rails, upright bridge framework and pivoting gates for the transfer of product from one rail to another