Product Description High impact Ravin Polymer nocks are desinged to lock into Ravin&';s unique Trac-Trigger Firing System. Ravin R500 Series Replacement Nocks at Outdoor America Browse all Outdoor America deals $14.99 In Stock at Outdoor America Price checked 8 days ago Buy Now at Outdoor America Secure checkout Easy returns or compare prices Amazon eBay Product Details Brand Ravin Ravin