MaterialCarbon Arrow Shaft and solid removable tips,well made and durable, low hand shock with good speed, straight fly, ensures good durability and long lasting target practice. ParameterTotal Arrow Length: 7.5 inch (21.6cm); Shaft ID:7.6mm(.299'); Shaft OD:8.8mm(.346'); Spine: 400; 100 grain and removable half moon nock help you to obtain accessories for repair easily. DesignSpecial designed with only 2 green rubber vanes, brings speed and accuracy, 7.5 inch carbon crossbow bolts, perfect for small game hunting, target practice & outdoor shooting training. Suitable forPerfect for the Beginners, Archers and Amateurs and Enthusiasts to hunting or practice. High cost-effective and quality, can hit to the target easily. PackageThe 7.5 inch Carbon arrows comes with pack of 6 or 12 for your option. 100% after-sales, money back or replacement is available. Any more questions, please contact us feel free.