Safety Accessories to Keep Your Bike Safe - A great way to prevent accidents and falls with your rear gear train. You'll need it to keep your gear secure when the kids drop their bikes or fall over Effective Derailleur Guard - These bike protection bars provide optimal protection for your rear derailleur. They prevent the derailleur from being bumped or shifted while riding. Easy to Install - These bicycle derailleur guard protectors can be installed easily. Only one fixing hole is needed, and then it can be fixed in the corresponding hole position. High Quality Material - Made of strong and durable steel. 4 pieces are enough for long-term use and replacement.Universal Bicycle Rear Derailleur Guard - Rear derailleur measures approx. 10.5cm x 5.4cm. Fits most mountain bikes, road bikes, folding bikes and racing bikes.Useful bicycle accessories Features: 4 Pieces Bike Derailleur Guards. .High-quality steel is strong and durable. Easy installation in one second. Compatible with: Most mountain bikes, road bikes, folding bikes and racing bikes. Specifications: Material: steel Color: Black Quantity: 4 pieces Aspects: Package includes: 4 x Bike Derailleur Guards Note:1. Please allow small quantities due to manual measurement. Please make sure you do not agree before accepting the bid.2. Due to different monitors, colors may vary, please understand. Notice:If the e-mail without name, etc. is incorrect, the order will not be delivered correctly. )