High quality value: specially designed for all kinds of copper doors, glass doors, KFC doors, our floor spring is the perfect choice of high quality housing for all kinds of residential doors Our floor springs are safe. In addition, our floor spring ensures the normal use of the door, parts are always changed. Easy installation: Each of our floor springs comes with detailed installation instructions, saving you time and facilitating quick installation without delay in use. Our floor spring does not need to go to the hardware store to run, simple operation, fast hand! Note: our floor spring is suitable for all kinds of copper doors, glass doors, KFC doors, please choose according to your needs for you, if you have other questions, please contact us!.syi