This is a fantastic foldable stem designed specifically for folding bikes. It directly connects to the fork steerer tube. What's great about it is that it can be folded and extended to fit your needs perfectly. It's suitable for bike types like NCM Paris and NCM London.

Using this folding bike stem is easy. First, connect it directly to the fork steerer tube of your folding bike. You can fold it when you need to store or transport your bike, and extend it to adjust the height for a more comfortable riding position. When using, make sure the connection is tight to ensure safety. For maintenance, regularly check the folding and extending parts for any signs of wear or looseness. Clean it with a mild soap and water, and dry it thoroughly to prevent rust. Avoid using harsh chemicals that could damage the stem.