Carbon Express Maxima RED 6mm Arrow Shafts 350 Spine 12 Pieces Black. Its RED Zone with Tri-Spine Technology supports rapid recovery and reduced oscillation for steady flight across a wide range of bow setups. 360 degree spine consistency promotes uniform shaft behavior through every degree of rotation to simplify tuning and improve repeatability. With straightness rated to +/- 0.002 inches max and a +/- 1.0 grains weight tolerance it delivers dependable precision-focused performance. Specifications for Carbon Express Maxima RED 6mm Arrow Shafts: Manufacturer: Carbon Express Color: Black Fabric/Material: Carbon Quantity: 12 Shaft Length: 32.8 in Diameter: 6 mm Spine: 350 Features of Carbon Express Maxima Red 6mm Shafts: 6mm Standard-Diameter Hunting Arrow Shaft Red Zone With Tri-Spine Technology Manages Dynamic Spine Through The Shot Cycle Rapid Recovery Reduced Oscillation Broadhead-Friendly Stability Easy To Tune Across Bow Setups 360 Degree Spine Consistency For Uniform Shaft Behavior Straightness: +/- 0.002 Inches Max Average Straightness: +/- 0.001 Inches Weight Tolerance: +/- 1.0 Grains Components: Bulldog Nock Collars6mm Stainless Steel 40 Gr Inserts Package Contents: Carbon Express Maxima RED 6mm Arrow Shafts Carbon Express CX05861: Maxima RED 6mm Arrow Shafts 350 Spine 12 Pieces Black