1.Clock Movement Mechanism - Ultra silent Scanning Design, two different shaft length quartz movement for your choice. Sweep clock movement without any noise which can your sleep a silent environment. 2.Two-Clock Mechanisms Size: Short total shaft length 14 mm (0.55 in), thread length 7mm (0.275 in), suit for 2 - 5 mm thickness clock panel. Long Total sharft length 18 mm (0.7 in),thread length 9.5 mm (0.374in),suitable for 7 - 10 mm thickness clock,please check the sizes before buying. 3.MaterialandPackage: The clock hands are made of high-quality aluminum, which is lightweight and resistant to corrosion. Includes 2 clock movements in different sizes, 5 pairs of hours and minutes hands, 5 seconds hands and second cap, easy to install, and many options in one set. 4.Wide Application: DIY quartz wall clock replacement movement parts, suitable for cross-stitch, three-dimensional embroidery, craft clock, frameless draw clock, suitable for repairing, replacing, or making a clock, and also suitable for various styles of the clock frame (no battery) Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.