Gold Tip Nitro Pro Crossbow Bolts 22 in. Moon 3.5 in. Vanes 6 pk. Pro version of the Nitro bolt for tighter tolerances and improved accuracy;Straightness tolerance: +-.001"";Weight tolerance: +-.5 gr.;Factory fletched with 3.5 in. vanestable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; } Item Category Code: 3400 Product Group Code: 3400C Product Sub Group 1: 3400C2 Pack Size: 6 Inactive: No