"18 IN. LONG, CUTTING ROD IS COMPRISED OF SEAMLESS COPPER COATED STEEL TUBE(WHICH SERVES AS THE OUTER CASING),CONTAINING ALLOW FUEL WIRES. THE INTERIOR WIRES ARE ARRANGED IN A CIRCULAR PATTERN WITH A CLEAR CENTER OXYGEN PATH. THE WIRES ARE RETAINED WITHIN THE TUBE BY CIRCULAR CRIMPS. THE ROD ENDS ARE MACHINED TO A SMOOTH SURFACE TO ATTAIN A TIGHT SEAL WITHIN THE TORCH AND ENSURE LONGEVITY OF THE NEOPRENE COLLET WASHER CUTTING RODS, 1/4"" X 18"", 100 ROD BOX"