Carbon Express T1252 Predator II Youth Archery Arrow with 2-Inch Assault Vanes, Size 2040-Sized&nbsp; Designed to offer outstanding strength, durability and high-powered performance in a lightweight arrow Rugged carbon composite arrow certain to deliver impressive results Laser checked for straightness to a remarkable 1/10,000 of an inch; Sold as an individual unit Items specifications: 2040-Size, 30-Inch Length, 7.04-GPI, 0.623-Inch Spine and 0.277-Inch Diameter Perfect for light poundage bows with (2) spine offerings to fit 20 to 40-pound bows and 30 to 50-pound bows