IRQ Archery 31inch Aluminum Arrows for Compound Bow Hunting Target Arrows with Screw in Replaceable Field Points 6 Pack Spine 550 31'' Aluminum shafts+4 inch 2 blue 1 white plastic vanes Threaded arrow tips diameter of 7.6mm for interchangeable heads Aluminum Arrow weight about 35g/pc, Package with 6 pcs Guaranteed straightness for accurate shooting Good choice for compound bow and long bow draw weight about 40-65lbs