Carbon ArrowsSpine: 500; Shaft ID: 6.2mm(.244); Shaft OD: 7.8mm(3.07); Arrow Shaft Length: 30inch(76.2cm); Full Arrow Length: 31inch(80cm); Suitable for compound bow & recurve bow & long bow. Archery Hunting/Practice ArrowsHigh quality Carbon Archery Arrows, low hand shock and help to improve the fast speed and shooting accuracy; Great hunting & target practice arrows for both youth and adults. Removable Arrow Tip100 grain screw-in steel points, can be replaceable depending on your needs, equipped with black rubber O Ring, can prevent the arrowheads from loosing efficiently. 3 inch TPU VanesWith 3 pieces 3' Rubber Vanes, especially for the long distance shooting, high fly speed. Keep a good balance and straight flight path; Have a good performance in various weather conditions in wild environment. Arrow NocksNo glue fixing, the orientation of the nocks can be rotated by a coin easily to fit for recurve bow and compound bow. Package Quantity: 6/12 pieces Carbon Arrows. 100% after-sales