Ravin Xbow .001 Polymer Nock Arrow - 6 Pack. 001 and are the most premium arrows Ravin offers. Delivering extreme knockdown power and increased kinetic energy these arrows are ideal for big game hunting. The HD arrows come in a pack of 6 and have high-impact brass-threaded inserts with aluminum nock bushings and Ravin-engineered polymer nocks. Specifications for Ravin .001 XK5 500 Grain Arrows: Manufacturer: Ravin Color: Black Quantity: 6 Finish: Brass Weight: 500 grain Nock Type: Ravin Clip-on Nocks Fabric/Material: Carbon Straightness: 0.001 in Features of Ravin .001 XK5 500 Grain Arrows 500 grain (with 100 grain field tip- not included) Use in Ravin Crossbows only 100percent pure carbon construction High-impact brass threaded inserts 2in high-profile offset vanes High-impact aluminum nock bushings Ravin-engineered polymer nocks. Package Contents: Ravin .001 XK5 500 Grain Arrows Ravin R149: Xbow .001 Polymer Nock Arrow - 6 Pack