Material: Carbon Outer Diameter: 7.8mm/0.307" Inner Diameter: 6.2mm/0.244" Shaft length: 26" 28" 30" for your choice Whole length: 27.5" 29.5" 31.5" Spine: 500 GPI: 13 (grain per inch) Whole Arrow Weight: About 35g each for 30 inch arrow, about 33g each for 28 inch arrow, about 31g each for 26 inch arrow Suit for: 30-60lbs compound, recruve and long bow Condition: New item Vanes: 3" plastic bright color vanes are easy to be found Nocks: Durable plastic nock, removable you can turn the nock with a coin Tips: 100 Grains With O-ring. The tips can be replaceable, the insert is glued User Notice: 1. Please do not shot against concrete wall or any hard substance. That may damage the arrows. 2. Please use an arrow rest to protect the bow, or the bow may be damaged by arrows. 3. If the plastic vanes shape is distorted, you can put the vanes into 80-100? hot water for 5-10 minutes, or straighten them by using an air dryer they can be recover to original shape.