1.PREMIUM SILICONE PROTECTOR Made of silicone, this chainstay guard provides excellent protection for your bike's frame from chain knocks and wear. The material is resistant to abrasion and impact. 2.Easy installation without tools required For convenience, this silicone chain line can be easily installed without tools or adhesives. Simply stretch it over the chain stop area of your bike frame for an instant layer of protection. 3.VERSATILE COMPATIBILITY WITH MOST BIKES This protector is designed to fit a variety of bike frames, including mountain bikes, road bikes and hybrid bikes. The universal design ensures compatibility with different sizes and shapes of chain pieces and provides effective protection regardless of whether you are driving on robust paths or smooth roads. 4.ENHANCED DURABILITY FOR LONG TERM USE This chain stay guard is engineered for longevity and can withstand rigorous use and challenging rides. It not only protects against immediate damage, but also prevents longterm wear and tear that can occur due to repeated between chain and frame.