UST Mamiya DART V TSPX Iron Shafts

You’ve waited, and today is the day, UST Mamiya is officially releasing their new DART V TSPX iron shafts.

What do we know about them? Thus far very little as UST has been tight lipped with a fun amount of secrecy. However, THP’er do currently have them in hand and have been testing them already. This thread will be for their feedback and information, as well as from UST Mamiya and any of you who get the chance to try them as well!