Allen Xd300 Crossbow Bolt 3 Pack .003 Straightness Black 20in. With the Allen XD300 those worries are left behind. Allen arrows and bolts are designed with higher grade arrow/bolt components to perform flawlessly in flight and deliver precision accuracy down-range on target. At 12.35 grains per inch a .003 inch straightness and fletched with 3" Bohning shield cut vanes this crossbow arrow is built for penetration and downrange performance. Allen arrows/bolts are ready to take on anything from your backyard targets to the trophy of a lifetime. Specifications for Allen Xd300 Crossbow Bolt 3 Pack: Manufacturer: Allen Color: Black Fabric/Material: Carbon Length: 20 in Width: 4.5 in Features of Allen Xd300 Crossbow Bolt 3 Pack: High Strength Carbon Crossbow Arrow Fletched with 3 - 3" Bohning Shield Cut Vanes Weight Matched Length: 20" Straightness: .003" GPI: 12.35 Package Contents: Allen Xd300 Crossbow Bolt 3 Pack Allen 93230: Xd300 Crossbow Bolt 3 Pack .003 Straightness Black 20in