The 1260 Multiple Bladder shaft design is an improvement over any single bladder lug or button shaft in every aspect. It centers your cores and runs faster, holds more weight, has greater gripping power, achieves greater expansion, may be used for a wide variety of applications, and is far easier to repair. There is no good reason to look at another shaft.
Cantilevered designs are typically made from one piece of solid steel to handle high roll weights or to run at extreme speeds. In lighter applications, the body may be aluminum.