Carbon Express Arrow Shafts. A unique carbon cross-weave design gives these shafts unbelievable strength and shock resistance. With a straightness factor of .003", they rank among the straightest shafts on the market. Nocks and inserts included with shafts. Carbon Express Arrow Shafts can be purchased in half dozen and full dozen quantities only. Nocks and inserts are included in the price of the Carbon Express Arrow Shafts.