Carbon Express T1312 PileDriver Hunter BuffTuff Carbon Arrow Shaft Bare shafts come with LAUNCHPAD Precision Nocks and BullDog Nock Collars (nock color may vary from image) Features exclusive "Built-in Weight Forward" technology for superior downrange accuracy with a broadhead Laser checked for straightness to a remarkable 1/10,000 of an inch; Straightness of +/- 0.005" is a maximum measurement, not an average Item specifications: 250-Size, 10.4-GPI, 0.402-inch Spine and 0.304-inch Diameter 12-pack of "Mossy Oak Brush" camouflaged pattern shafts are sorted and matched by weight for best-in-class consistency