Suitable for Crossbow: COBRA SYSTEM R9 Cobra R9 / RX / ADDER. Perfect for the Beginners, Archers and Amateurs and Enthusiasts to hunting or practice. High cost-effective, Special designed (only 2 vanes) for crossbow, these crossbow arrows brought you speed, kinetic energy and accuracy. 7.5mm(0.295") diameter, carbon crossbow bolts total weight: About 200 grains(7.5 inch) include 100 grain point. Pure Carbon shafts are durable and well made. Precision arrows vane, nock and field points are good for extended durability and long lasting target practice. Standard 100 grain screw point with insert and nock allow you to obtain accessories for repair easily. It makes of high quality carbon,very accurate,straight fly, easy to hit to the target. The arrow tips are sharp, when you play the arrow in backyard or outdoor, please make sure no any bystander near them. If the plastice vane shape is distorted, you can put the vane into 80 to 90 Degrees Celsius hot water for a few minutes, it can be recover the original shape.