Carbon Express 56501 Game Slayer Aluminum Hunting Arrow with 4-Inch Vanes and TCX Nocks, 2117-Sized Black Shaft, 12-Pack Alloy aluminum arrow is fully assembled with an insert and 4-inch vanes Tunable TCX nocks for greater accuracy 7001-T6 alloy construction with a tensile strength of 88,000-PSI Items specifications: 30-Inch Length and 2117-Size Comes in a 12-pack of black arrows