Features: Securely mount your under bike seats with this stealthy anti theft bracket featuring patented double clamp designs and security bolts, ensuring hidden tracking without signals interference. accuracy engineered from ABS component with splashproof construction, this compact mount includes 4 adaptable spacers for 7 10mm seat posts while maintaining 's full functionality. Ideal for city cyclists, commuters, and adventure riders seeking discreet theft defense , particularly valuable for high end bicycles and family bikes requiring real time location monitoring. Perfect for daily city commuting, holiday trail rides, or parking in public areas where concealed tracking prevents theft and provides peace of mind through the find internet . Backed by utility patents, this general bike saddle mount combines grade security with sleek ergonomic designs , suitable for 95% of standard bike seats worldwide. Specifications: Component : plastic Package Includes: 1 set Positioner Bracket note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.