Carbon Express Mayhem DS Hot Pursuit Arrows are weighted to maximize kinetic energy, increasing momentum for exceptional penetration, making them perfect for archers shooting low-poundage bows. Dual Spine Weight Forward technology combines two different spines in one arrow so it recovers faster, spins sooner and retains more speed, which all adds up to increased accuracy. The front of each 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. Sizes: 150 (8.5 gpi), 250 (9.3 gpi). Straightness factor: .0035. Wt. tolerance: 1 gr. Recommended field point size: 19/64. Size Spine GPI Dia. Length 150 0.495 8.5 0.294 32.5 250 0.380 Type: Fletched Arrows.