IRQ Archery 31inch Carbon Hunting Arrows for Compound and Recurve Bow Spine 400 3 inch Plastic Vanes Adjustable Nocks Practice Target 12 Pack (12 Pack) Quality test carbon fiber shafts arrows for extended durability Carbon Hunting Arrow Length about 31(79cm) , 400 spine hunter arrows, 100grain arrow tips Hunting arrows for compound bows,longbows, recurve bows The nocks are not glued,which can be rotated to adjust your bow Threaded screw in arrow tips +3inch rubbery plastic arrow vanes