The ST539 Bang-O-Matic was introduced to honor Scott Smith’s 539 yard RE/MAX Long Drive record. This record is still intact. The ST539 is a cast all Beta Titanium head. This process is much more expensive than forging and you must make a separate tooling for each loft. Casting is also much more consistent from head to head. Because of the proprietary heat treatment the ‘feel’ on this head is extraordinary and flight characteristics are mid-high launch with low spin for amazing roll-out. Expensive? Yes. But, your game is worth it!