Archery 12pcs Carbon Arrows Shaft ID4.2/6.2mm Spine300-800 Compound Traditional Recurve Bow Hunting ShootingSPECIFICATIONS Brand Name: Linkboy Archery Origin: Mainland China Type: Arrow Shaft Material: Carbon Use: Hunting Carbon shaft color: black ID 6. 2MM Spine: 300 340 400 500 600 700 800 ID 6. 2MM Length: 30inch 32inch Material shaft: Pure carbon using: hunting shooting straightness: + 0. 006 ID 4. 2MM Spine: 400 500 600 700 800 900 ID 4. 2MM Length: 30inch Using: hunting shooting Archery 12pcs Carbon Arrows Shaft ID6. 2mm Spine300 800 Compound