BOWSOUL 20inch Fluorescence color crossbow boltsThe entire arrow shaft is fluorescent, making it easier for users to find the bolts. The arrow vanes, we use 4-inch shield feathers, bright color combinations, and cost-effective prices to give you a new experienceArrow SpecificationFluorescence color ·Shaft length:20"·I.D:7.62mm(0.300”)·O.D:8.8mm(0.346”)·Total Weight: 410gr·Come with 125 gr. target points·Fixed insert·Moon nock·Pack of 12 arrows·6pcs nocks as giftUser Notice1.Warning?check for damage before each shooting2.Do not shot against concrete wall or any hard substance. This may damage the arrows.3.The vanes may be bent because of long way transportation, you can put the vane into 80 Degrees Celsius-90 Degrees Celsius hot water for a few minutes, it can be recover the original shape.4.The use of an overdraw significantly increases the risk of injury to the shooter.