Description: 【Overall Outside Diameter】: 2-1/8 Inch (55 mm). This is the outside diameter of the round face desk clock insert. 【Mounting Inside Diameter】: 1.97 inch (50 mm). This is the insert diameter of the opening that the clock fits in. You can use this clock insert to make clock crafts. movement clock insert has a rubber band gasket to securely hold the clock face in place. 【Appearance】: The insert clock features smooth surface and gold bezel with exquisite workmanship. The craft clock insert is designed with black arabic numerals marking on the gold dial plate for easy reading. 【High Quality】: This mini clock is your good choice to make crafts or use it as a nice gift. Perfect for home, kitchen, office,etc. With a hole at the back of the clock, it allows you to hang it on the wall or other decor items. 【 Compatible Clock】: Miniature clock Insert replacement fits in many types of small glass and crystal clocks movement. Great for crafts or replacing old clock faces. Specification: Material: Alloy  Size Chart: Diameter: 5.5cm/2.17inch Back: 4.5cm/1.77inch Height: 0.6cm/0.24inch Package Includes: 1 Mini Clock Insert (3 Pack) Note: Please allow slightly errors due to manual measurement and different monitors.