Using this Quad Lock Adjustable Stem Cap Mount is a breeze. First, install it securely between your bike's stem and stem cap. Make sure it fits well with your stem's angle. You can mount the lever head on either side according to your preference. To adjust the viewing angle of your phone, use the screw - tightened hinge. Simply twist it to the desired position and lock it. This way, you can view useful apps while riding. When you want to take a photo or answer a call, it's easy to detach your phone from the mount. As for maintenance, keep it clean. Wipe it with a soft cloth regularly. Avoid exposing it to extreme weather conditions for a long time. If you notice any signs of wear and tear, check the parts carefully. If needed, you can replace some components to keep it working properly.