Carbon Express Maxima XL 25 Arrow Shafts 400 Spine 12 Pieces Black. Its diameter supports line-cutting potential while remaining versatile for changing outdoor conditions. Tri-Spine Technology promotes stable launch characteristics and 360 degree spine consistency keeps shaft-to-shaft performance uniform for repeatable accuracy. Straightness is rated to +/- 0.025 inches max with a +/- 1.0 grains weight tolerance and it includes 12 Bulldog nock collars. Specifications for Carbon Express Maxima XL 25 Arrow Shafts: Manufacturer: Carbon Express Color: Black Fabric/Material: Carbon Quantity: 12 Shaft Length: 32.5 in Features of Carbon Express Maxima XL 25 Arrow Shafts: Mid-Diameter Arrow Shaft Design Balanced Indoor And 3D Performance Line-Cutting Diameter Advantage Versatile Flight Behavior For Variable Outdoor Conditions Tri-Spine Technology 360 Degree Spine Consistency For Uniform Shaft Behavior Straightness: +/- 0.025 Inches Max Average Straightness: +/- 0.001 Inches Weight Tolerance: +/- 1.0 Grains Includes 12 Bulldog Nock CollarsOther Components Sold Separately Package Contents: Carbon Express Maxima XL 25 Arrow Shafts Carbon Express CX05817: Maxima XL 25 Arrow Shafts 400 Spine 12 Pieces Black