A medium diameter platform for all applications. The Base boasts a .205 ID to maintain a slim and aerodynamic profile, while having a slightly lighter GPI range than the Nucleus or Double Helix shafts. But don't worry, this shaft maintains a thicker wall than many medium diameter shafts on the market, maintaining great structural integrity. Paired with an Ethics Archery stainless steel half-outsert, all at a price that will make you go back to the basics. The price may be lower, but there were no corners cut here. The Base maintains the .003 straightness factor and +/- 1 GN weight variance the same as it's heavier counterparts.