Two-Clock Mechanisms Size: Short total shaft length 16 mm (0.63 in), thread length 8mm (0.315 in), suit for 3 - 6 mm thickness clock panel. Long Total sharft length 23 mm (0.9 in),thread length 15.4 mm (0.6 in),suitable for 9 - 13 mm thickness clock panel, These two clock movements can be used for almost any home wall clock.Silent Clock Mechanism: YOGINGO clock movement use ultra-silent Scanning Design, Sweep clock movement without any noise which can offer your sleep a silent environment. All of your requirements are met by a simple and elegant design.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.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)Warm Notice: Please double-check the dimensions of this clock mechanism replacement movement before purchasing they are made of aluminum, and please do not apply excessive pressure to avoid bending them. 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.