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