Solar Nite-Glo Indicator Head With Stainless Hanga Ball Line Clip While the new Solar System Indication Range represents the cutting edge of Indicator Innovation, some Solar bestsellers we cant drop due to popular demand. Formerly our Titanium Heads, weve brought these best-sellers bang up to date with the addition of our Stainless Hanga Ball Line Clip.Carbon and Nite-Glo Indicator Heads are part of Solar System Indication, enabling you to design the bespoke indication system of your choice, from component parts proven over decades; that last for decades; that are still decades ahead.