Description: Made of high-quality silicone material, sturdy durable, and has a long service life. Environmentally friendly silicone integrated molding, super compressive resistance, abrasion and abrasion resistance. Double hole strap design, more safe and stable. Suitable for a variety of bicycles, racing bike, mountain bikes, road bikes and etc! Easy to install and lightweight design(Can be cut short and installed according to the model). Specification: Material: Silicone Size Chart: Szie: Long 13.5x3.2x1.6cm/5.31x1.26x0.63inch Inside Diameter 10.2x2.5cm/4.02x0.98inch Short 11.5x3.2x1.6cm/4.53x1.26x0.63inch Inside Diameter 8.2x2.5cm/3.23x0.98inch Package Includes: 1 Pair Chain Guard 6 Pieces Tie Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping!