Victory TKX Sport Bolts 20 in. Lighted Nocks 3 pk Black. Constructed with Advanced 3K Carbon Weave Technology these bolts minimize torsional deflection and maximize arrow recovery speed penetration and energy retention. Their EFOC (Extreme Forward of Center) design enhances in-flight stability while 100 percent brass inserts and Victory?s Catch Nock provide durability and strength. Each bolt undergoes Victory?s Spine Alignment process for greater accuracy and is hand-fletched for consistency. With a shaft straightness tolerance of +/- .006 inches these bolts deliver reliable results shot after shot. Specifications for Victory TKX Sport Bolts: Manufacturer: Victory Color: Black Features of Victory TKX Sport Bolts: Length: 20 inches Total weight: 325 grains Insert weight: 110 grains Inner diameter: 0.300 inches Outer diameter: 0.344 inches Shaft straightness: +/- .006 inches (Sport) Advanced 3K Carbon Weave Technology Extreme Forward of Center (EFOC) design Victory Spine Alignment for improved consistency Stiffer spine for increased accuracy Hand-fletched for precision build quality Equipped with Victory Catch Nocks Sold as a 3-pack Package Contents: Victory TKX Sport Bolts Victory XBOLTKS-20FXGL-3: TKX Sport Bolts 20 in. Lighted Nocks 3 pk Black