Review on 📡 10pcs Black Plastic Antenna Tube with Caps for FRSKY XM XM+ X4R X4RSB S6R/D Series/TF Series IPEX4 Receiver Antenna - iFlight by Roger King

I could just glue them to the multicopter frame to keep your antennas under control cheap but I use them as a replacement for this product: https: //www.amazon.com/gp/product/B01CI22YD8 (These tubes are slightly larger in diameter than the ones included in the kit above for a tighter fit.) They do a great job of keeping the antenna wires away from the propellers, and they hold up very good under normal flight conditions. They are stiff enough not to flex into the brace. They can be bent a bit if you're careful. Of course, the same rigidity that keeps them stiff and separate from the propellers also makes them a little brittle, so expect them to break relatively easily in a serious collision. They are relatively cheap so make sure your expectations are realistic and you will be satisfied.