Come with back cover and rubber gaskets to secure the insert in place, which can slight irregularity in the hole It can be used directly or embedded into wood clocks, hardware clocks, iron clocks, lighting-clocks Great for or replacing old clock face, and the clear cover reads the-time easily Clock insert features a golden / silver colored trim, and black arab numerals for easy-reading Suitable for all kinds of crystal, ceramics, wood, marble and other table clock