For years now, Easton has been using letter codes- S, X, H, and G- to indicate the internal diameter (and therefore, component compatibility) of our high-performance hunting arrows. That worked great back when there were only a couple of choices- but today, it can be a little confusing.
That’s why you will now see the internal diameter of all of our performance hunting shafts described in millimeters- much like firearms projectiles.
S “standard” Diameter is 6.5MM, H “Reduced Diameter” is 6MM, X “Micro Diameter” is 5MM, and our “Ultra-Micro” G Diameter is 4MM (utilizing Deep Six components.)
The new nomenclature immediately allows you to relate one size to another, and makes it a lot easier to select the right components for your preferred arrow.
Going forward, we will refer to all hunting shafts (and matching components) by their metric inside diameter- but right now, you’ll find both references in our technical materials, catalogs and other resources.