Gold Tip Black Label Quantum Shafts 400 Grain 1 doz. G975400. 204" design that excels in both toughness and accuracy. Part of the Black Label family these shafts undergo laser-checked straightness testing and offer a straightness tolerance of .0025" with a weight tolerance of +/- 2 grains. Each shaft includes ballistic collars and aluminum inserts for increased strength and front-of-center performance. Specifications for Gold Tip Black Label Quantum Shafts G975400: Manufacturer: Gold Tip Color: Black Size: 400 Features of Gold Tip Black Label Quantum Shafts: Micro-diameter .204" ID design for increased penetration Laser-checked straightness Straightness tolerance: .0025 inches Weight tolerance: +/- 2 grains Night renegade graphics GPI: 400 spine: 7 GPI 340 spine: 7.7 GPI 300 spine: 8.3 GPI 250 spine: 9.3 GPI Includes ballistic collars: 400 spine: 16.1 grains 340 spine: 15.6 grains 300 spine: 14.5 grains 250 spine: 18.4 grains Includes aluminum inserts: 400 spine: 24.3 grains 340 spine: 24.9 grains 300 spine: 25.4 grains 250 spine: 26.4 grains Sold as a 12-pack (1 dozen) Package Contents: Gold Tip Black Label Quantum Shafts