Using the Topeak DP Dropper Post Mount is easy. First, select the item you want to attach, like a water bottle cage or a saddle bag. Then, make sure your bike's upper post diameter is between ø22 and ø27 mm. If needed, use the included shims for a perfect fit. Simply mount the accessory onto the post using the mount. As for maintenance, keep it clean by wiping it with a dry cloth after rides. Avoid exposing it to extreme weather conditions for long periods. When not in use, store it in a dry place. Also, always double - check that the mount is securely attached before each ride to ensure your accessories stay in place.