Ravin 0.001 R500 series arrows are engineered to complement the exceptional speed and performance of Ravin R500 series Crossbows. With a remarkable straightness tolerance of 0.001, these arrows ensure precision and accuracy, whether equipped with a 100 grain field tip or broadhead. Built to endure the immense kinetic energy generated by R500 bows, they deliver a reliable and smooth flight trajectory, consistently hitting the mark for the dedicated Apex Hunter. For exclusive use with Ravin R500 series crossbows only Six-Pack 400 grain (excluding 100 grain field tip) Constructed entirely from pure carbon Brass threaded inserts with high-impact 2 inches high-profile offset Vanes Durable aluminum nock bushings Polymer nocks designed by Ravin