Sonartec HB-001 Rescue Club. The Sonartec HB-001 hybrid features rail technology for effortless playability in the greatest variety of conditions from tee to green. It has a neutral face angle with optimal bulge and roll for greater forgiveness and workability than any long iron. The 455 stainless steel provides a Sonartec solid feel and crisp sound, reminiscent of Sonartec's fairway metal roots. Sonartec Golf and Graphite Design International created the ONiN2 hybrid shaft to match the Sonartec HB-001 head, providing golfers with more accuracy and distance.