Carbon Express Maxima Photon SD Shafts 300 1 doz. Enhance your archery performance with the Carbon Express Maxima Photon SD Shafts 300. Designed for precision and accuracy, these shafts are a perfect choice for serious archers looking to improve their game. With a spine of .309 and a weight of 18 grains for the aluminum half-out insert, these shafts ensure optimal energy transfer and arrow flight stability. The Carbon Express Maxima Photon SD Shafts feature a GPI of 8.9, making them lightweight yet durable for consistent performance. Their innovative design promotes better grouping and minimizes wind drift, allowing you to hit your target with confidence. Whether you&';re hunting or competing, these shafts will give you the edge you need to succeed. Features: * Spine: .309 for optimal energy transfer * GPI: 8.9 for lightweight durability * Insert: 18 grain aluminum half-out for improved accuracy * Inner diameter: .203 for a snug fit * Quantity: 1 dozen for extended usetable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; } Item Category Code: 1000 Product Group Code: 1000B Product Sub Group 1: 1000B1 Inactive: No