Carbon Express Heritage Woodgrain Durability and consistency of carbon. *Available in 5 spines with a +/- .005 straightness and matched to +/- 2 grains in weight spines 75 /8.7 gpi 90/9.7 gpi 150/10.1 gpi 250/10.2 gpi 350/11.5 gpi/- .005 straightness and matched to +/- 2 grains in weight *Choose Solid Color or Barred Feathers
