The VForce™ arrow has defined the industry standard for high quality hunting arrows since day one. Highly advanced carbon engineering helped to craft this 100% all carbon shaft with incredible consistency and durability. If you want one of the toughest, most dependable hunting shafts on the market, then the VForce™ is for you. Features: The deadliest combination for your next hunt of a lifetime 100% high modulus carbon fiber for strength and durability Victory's spine alignment process for increased accuracy and tighter grouping Nano ceramic "ICE" coating improves penetration and allows for easy removal from targets Specifications: Construction: 100% Carbon Fiber Inside diameter: 0.245” Straightness: +/- .003″ Weight tolerance: +/- 0.5 grains, sorted per dozen Quantity: 12-pack Available Spine Size (Weight) OD: 300 (9.9 gpi) .309" 350 (8.7 gpi) .298" 400 (8.2 gpi) .295" 500 (6.9 gpi) .287" 600 (6.7 gpi) .287" Includes: Aluminum Insert AAE IP6 Nock