Easton Sonic 6.0 Shafts in spine 250 are precision carbon arrow shafts designed for target shooters who demand consistent spine and reliable performance. This 1-dozen pack arrives ready to build with 6mm inserts and pre-installed 6mm nocks, plus factory helical fletching for stable flight.

• Spine / Size: Spine 250 (1 dozen shafts) — available in 250, 300, 340, 400, 500, 600 to fit your draw and tuning needs
• Diameter and Construction: 6mm reduced-diameter, 100% carbon-fiber construction for lightweight, uniform flex
• Inserts: 6mm ST inserts included (18 grains per insert) for precise weight and tuning
• Nocks: Pre-installed 6mm nocks for quick, out-of-the-box setup
• Fletching: Factory helical fletching with 2" Bully Vanes for enhanced stability and accuracy
• Straightness: Very tight tolerance at +/-.003" to ensure predictable flight

These features translate into real-world advantages: consistent spine across the dozen shafts helps deliver tighter groups at range, while the carbon construction provides dependable durability and uniform flex for repeatable performance. The helical 2" vanes improve yaw stability in varying winds, reducing wobble and helping arrows fly true from shot one. Pre-installed components cut setup time, so you can start practicing or competing sooner. With multiple spine options, you can select the exact build that matches your draw weight and shooting style, and fine-tune total arrow weight using the included 18-grain inserts for precise accuracy goals.