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These don't require you to purchase separate guards and screw them on, just install by twisting them on for a tight fit. When done, you can twist them off and they pack nicely in your travel bag. Seams shape ways has a size limit for red so you will need to make all white unlike the photo of mine. For additional protection, you can thread a string through holes provided (make sure you thread them under the guards by the props). Hope this helps you protect your bird and self. Fly safe! Note: please order 4 of these to get a set. Price is per one guard.