Some Rage models come with an O ring. But most Rage models come with a rear-deploying blade designed with a blade retention system. Such a design keeps the blades closed. Rage designed its mechanical broadbands to perform without its blades opening up early. The rear-deploying blades come with a blade retention system. Such a design secures the blades and keeps them closed until the perfect time. Well, other models use an O ring. The O ring is a small rubber band. It is something that slides over the ferrule. The blade of the broadhead comes with minor grooves. The grooves secure the rubber ring and work by reducing the chances of the blade opening up prematurely. Known as arrow point locks or gaskets, the O rings, however, wear fast. Every after use, you will perhaps try to rotate the ring slightly. This step is to secure the blade to an unused part. The O ring, however, is not a perfect solution to the premature opening up of blades. Despite the O ring, some hunters still experience early start-up of blades. As such, Rage introduced to the market the shock collars. Shock collars serve as blade retention accessories. They are small plastic collars. They come with grooves, slide into the ferrule, and pass through the O ring. It covers the O ring. Its primary purpose is to increase the holding power of the blade retention system. There are newer Rage broadheads in the market. Most of them already come with shock collars. Also, Rage introduced legacy collars that you can use with previous models. Rage Legacy Shock Collars pair well even with heavier models like the 100-grain Rage broadheads. If you want to, you can still use the standard shock collars. The regular shock collars pair well with any Rage broadhead. However, we recommend using high-energy shock collars if you use a crossbow. They come with more retention power. It does not matter what kind of shock collar you use. All you have to do is to replace it after every use. Shock collars come with breakaway petals. You could consider these to be single-use objects because of this. — To close the discussion, let me emphasize that when choosing broadheads, they match your preferences. You will be fine if you have the features that matter to you. Make sure to look for these features when choosing an arrowhead. It serves no purpose to purchase brand-new hardware just to discover that it is deficient. It will not help to learn later that the one you purchased does not meet your expectations. Getting a broadhead takes a lot of thinking. You have to put into mind several considerations. But once you have a perfect broadhead, your performance will be top-notch. It’s as if you finally hit the target.