Good clock replacement: Great for repairing, replacing or making a clock. Simple style clock movement: good quartz movement work well. Simple design, easy to use. Wide application: You are enable to use it to repair, replace or make a home clock; Applicable to -, three-dimensional embroidery, craft home clock, frame-less draw clock, clockwork, etc. Perfect DIY clock kit, clock accessories, clock parts accessories. Energy efficient. Accurate timing. Good DIY Clock Supply: Suitable for repairing, replacing the broken parts of a clock, or serving as good handwork material to make a clock by yourself. Type: Clock Movements Power: 1.5V AA battery (not included) Total Shaft Length: 31mm/1.22in, thread length: 24mm/0.95in, suitable for 16~21mm/0.6~0.8inch thickness clock panel. Instruction: 1. Attach the clockwork to the product to be installed. 2, is installed in accordance with the standard 12 points 3. Pull out the positioning pin from behind the clockwork and insert the battery. (Do not insert the battery and then pull out the locking pin.) size: Total shaft length: 31mm, Thread length: 24mm Material: Plastic + Aluminum colour: Black + red Package contents: 4 x Clock Movement 8 x Hour Hand 8 x Minute Hand 4 x Second Hand 8 x Rubber Gasket 8 x Metal Gasket 8 x Screw Cap 4 x Second Cap Nut Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.