Two-Clock Mechanisms Size: Short shaft length 16 mm (0.63 in), thread length 8mm (0.315 in), suit for 3 - 6 mm thickness clock panel. Long 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 any home wall clock. Silent Clock Mechanism: 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 by a simple and elegant design. Material: The clock hands are made of high- plastic, 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 in one set. Wide Application: DIY quartz wall clock replacement movement parts, suitable for -, three-dimensional embroidery, craft clock, frameless draw clock, suitable for repairing, replacing, or making a clock, and also suitable for styles of the clock frame (no battery) Warm Notice: Please double-check the dimensions of this clock mechanism replacement movement purchasing; they are made of plastic, and please do excessive pressure to avoid bending . Colour:Photo Color Material:plastic Package Contents: 2 x movement 5 sets x hands 1 set x accessories Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.