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【Protects Bike Frame Threads】These bike frame screw hole plugs provide a reliable seal for M5 mounting holes, helping block water, dust and mud from entering. Keep unused bottle cage mounting points cleaner and reduce corrosion caused by outdoor riding conditions. 【Durable Rubber Material】Made from flexible and durable rubber, these thread protector plugs offer a secure fit while allowing easy installation and removal. The soft material helps avoid damage to delicate frame threads during use. 【Quick Installation & Removal】No special tools are required. Simply press the plugs into the mounting holes for quick installation or pull them out when installing new accessories. 【Ultra Lightweight Design】With an ultra-lightweight construction, each cap adds almost no noticeable weight to your bicycle. Ideal for cyclists who want simple frame protection without unnecessary accessories. 【Wide Bike Compatibility】These bike frame screw hole plugs are suitable for most road bikes, mountain bikes and other bicycles with compatible threaded mounts.