Precision Carbon ArrowsSpine: 300/350/400/500/600; Shaft inner diameter: 6.2mm(.244); Straightness: +/-0.006; Arrow Shaft Length: 30 inch(76.2cm) ; Suitable for Compound Bow & Recurve Bow & Long bow. Archery Hunting/PracticeHigh quality, precision Pure 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. 2 inches Water-dropped Shape TPU VanesWith 3 pieces 2' Rubber Feather Fletching, 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 NockNo glue fixing, the orientation of the nocks can be rotated by a coin easily to fit for recurve bow and compound bow. Package Quan