Compared with the traditional handle installation through screw to complete the handle installation, this product uses the self-locking spring on the handle to lock and fix the square rod technology to complete the installation of the handle. Simple, convenient and fast, improve installation efficiency and reduce labor intensity. There is a 16-ball ball bearing at the connection between the handle and the base, which reduces the friction of the handle turning and makes the handle smoother when turning. It can also be equipped with light-storing materials to realize luminous display function.