The new Aluminum Broadhead, designed exclusively for Ravin Crossbows, gives hunters surgical precision with its rear-deploying blades, which open on impact and have been tested and approved for crossbows shooting up to 450 FPS. This mechanical broadhead has a massive 2-inch cut and internal spring clip, eliminating the need for lock rings and O-rings.Features:Deploys upon impact;100 gr.;2" cut;Internal spring clip, no lock ring or O-ring;450 FPS approved