Get the most out of your bow with Carbon Express Mayhem DS Arrows. Built with Dual Spine Weight Forward technology that combines two different spines in one arrow so it recovers faster, spins sooner and retains more speed, which all adds up to increased accuracy. Front of the shaft is finished with BuffTuff for exceptional durability and a quiet draw that wont spook wary animals. Launchpad precision nocks ensure correct arrow alignment for consistency. Fletched with Quadel Raptor vanes. Arrows are full length with nocks and inserts loose. Per 6. Straightness factor: .0035. Wt. tolerance: 1 gr. Recommended field point size: 19/64. Size Spine GPI Dia. Length 250 0.380 8.9 0.298 32.5 350 0.333 9.8 0.300