Gold Tip XT Hunter 3555/500 Carbon Arrows with 4-Inch Vanes (Pack of 12), Black 1 dozen black carbon arrows with 4" vanes 7.3 grains per inch with a +/- 2 grain weight tolerance .246" GT-Series nocks and .246" Accu-Lite inserts included Shafts are 30" long, have a straightness tolerance of +/- .003", have a .500" spine, have an outside diameter of .291" and inside diameter of .246" Vane and nock colors vary