Pack of Six Arrows! Crossbow darts compatible with 150lbs crossbows. The aluminum shaft is stealthy, tactical black and light weight. Provides a swift speed and hard impact. Steel tip is threaded and removable to swap on the threaded arrow heads. The fletching is durable and has indication colors. On the end is a short and accurate crossbow nock. The thickness of this is .09mm and measuring 20 inch length.