The Double E Company has introduced a revolutionary large-diameter reel spool shaft. The company’s new “HCRS” expanding reel spool shaft delivers exceptional value, as it is often less expensive, yet stronger and stiffer than heavier metal alternatives. The large-diameter shaft utilizes a carbon fiber body for its strength, shrouded in aluminum to house the gripping strips. This hybrid design is unique in the marketplace, allowing large reel converters to wind larger rolls without increasing hoisting requirements (because the shaft itself is much lighter) or changing core diameters. It also allows higher critical speeds to increase machine throughput and minimize vibration. The shaft uses a convenient dual-valve inflation system to ensure roll security. Double E offers fast delivery and guarantees performance.