The included back covering and rubber gaskets provide secure installation, making it a reliabled for embedding into crystal, ceramic, or marble table clocks For clock enthusiasts, craft and repairers, this insert is perfectly for those who appreciate precise and fashion in their clocks Enhances your clock making projects with our Small Clock Insert, features a 65mm round and easy to read white face with golden or silver tone Arabic / Optional numerals This clock insert boasts a durability ABS construction, complemented with electroplating finish, ensuring long time and rust resistance Whether you ' re creating a new clock for home,, or workshop, or replacing old clock face, this versatiled insert for seamlessly into various setting