first year bowhunting went 3 for 3 with two passthroughs and a spine shot all rage all reusable all big holes take orings off go to auto parts store get new ones there they are a little thicker and will lock blades in tight will never open in quiver again. mine all opened and all killed deer i have no complaints and complete faith in them next year, untill they do prove me wrong then ill change until then i think they are awesome