The Carbon shaft is stealthy, and light weight. It provides a swift speed and hard impact. Steel tip is threaded and removable to swap on the Arrow Heads Point. The fletching is durable.On the end is a short and accurate crossbow nock. Specifications: Material: Carbon shaft, steel tip, rubber fletching Shaft Length：Approx. 30 Inches / 760mm Total Length: Approx. 31.4 Inches / 800mm Shaft Diameter: Approx. 7.8mm Spine: 500Color of Shaft: Yellow Color of Fletching:Yellow and Black Color of Nock : Transparent/Yellow/Blue/BlackPackage: 12pcs &nbs.