You are looking at an authentic original OEM Titleist Cncpt Iron ferrule.  Don't settle for the cheap knock-off aftermarket imitations, this OEM ferrule will fit better and get your shaft perfectly centered in any Titleist Iron hosel.  Although these ferrules are only sold on Titleist Cncpt irons, they will fit on any Titleist iron head and the silver ring will give your clubs a little bit of flair.