How to replace the mop head？

The head of a mop may damage after it is used for a long time. But it would be a shame to throw away the mop head, so many people buy new ones. So next for everyone to introduce how to replace the mop head.
1. Remove the screws from the mop using a screwdriver.
2. Remove the old sponge mop tip after removal.
3. Install the new mop head directly and tighten the screws.
The specifications of each mop head are different, some are longer and some are shorter. So when buying, you must install specifications to buy, inappropriate mop head is no way to replace.