Vapor Pro Series Camo Straightness +/- .0018” Weight tolerance +/- 2.5 grains per dz. Hardwoods Green HD Camo w / Radiant Armor Carbon Coating Plus (RACC+) The most revolutionary finish ever applied to a carbon arrow. Unaffected by chemicals or extended use. Tri-wrapped 120 gram unidirectional carbon fiber providing excellent hoop strength and durability. SIZES: 2000 - 7.0gpi., 3000 - 8.7gpi., 4000 - 9.7gpi., 5000 - 10gpi.