Description: 【Quality Material】: Seatpost mount holder is made of plastic and aluminum alloy material, solid and durable, ensuring durability and longevity, easy to install and remove. 【Product Dimensions】: Measures 7.2cm/2.83inch in length, making it compact and easy to install on your bicycle, Can adjust the angle of the taillight freely, with 2 fasten screws, stable and secure. 【Multifunctional Use】: The seat bow clip is designed for the universal interface, it can be used separately as an action camera holder, and your action camera at the back of the saddle. 【Easy to Use】: Bicycle Saddle Support can be used to mount your tail light or bike tail light at the back of the bike saddle, providing flexibility and convenience. 【Good Accessories】: Bicycle seat post mount tail light holder is compatible for most bike saddles with 2 stick bows, making it a versatile accessory for your bike. Specification: Seatpost Mount Material: Aluminum Alloy Size Chart: Length: 7.2cm/2.83inch Package Includes: 1 Bicycle Tail Light Holder Note: Please allow slightly errors due to manual measurement and different monitors.