ST Axis started the small–diameter revolution and remains the number-one choice for bowhunters looking for magnum performance in a big game arrow. ST Axis arrows provide more DURABILITY, POWER and ACCURACY than regular carbon arrows.Sizes 500, 400, 340, 300 Internal-fit "X" Nock–Installed HIT Insert, chamfer stone, installation tool, HIT epoxy–Included Points and broadhead adapter rings–Sold separatelyStraightness: +/- .005" Guaranteed max Black, micro-smooth finish Weight tolerance: +/- 2.0 grains High-strength ST carbon-composite fibers |