The Bolt Vane is designed specifically for crossbow bolts and will stabilize them for up to 100 yards. It's made of a ultra-stiff material that prevents vane flutter for a smooth bolt rotation and a quiet flight. The Bolt Vane's ultra-stiff material is durable enough to withstand the high velocities of modern crossbows. The Bolt Vane measures 3.5" (88.9mm) in length, 0.5" (12.7mm) in height, and weighs an average of 11.6 grains (751.7 mg). Like all Bohning vanes, the base of the Bolt Vane is pre-primed for optimal adhesion. Due to the ultra-stiff material, we recommend using an instant glue and/or a fletching jig with high adhesion force such as Bohning's Tower Jig or Multi-Fletcher. Proudly manufactured at the Bohning Factory in Lake City, Michigan, United States.