Carbon Express 50694 Maxima Hunter Arrow with Dual Spine Weight Forward and Blazer Vanes, 350-Sized Mossy Oak Camo Pattern Shaft Dual Spine Weight Forward manages energy better, recovers faster, spins 20-percent sooner, retains more speed and delivers unparalleled accuracy Back shaft section made with patented BuffTuff Plus carbon weave construction for spine consistency, strength and durability Laser checked for straightness to a remarkable 1/10,000 of an inch Items specifications: 250-Size, 8.0-GPI, 0.417-inch Spine and 0.295-inch Diameter Fastest, most accurate camouflage arrow in the Carbon Express line