Movement Hole (pinhole): Precision Hole (coarse hole)<br> Material: Stainless Steel, Plastic<br> Colour: Black<br> Movement Size: 5.6cm*5.6cm*1.6cm<br> The Total Shaft Length is 12mm and the Thread Length is 5mm.<br> Packing included: 1x Watch Movement<br> DIY Repair Clock:<br> Can be used to repair, replace the broken clock movement, or as a hand-made tool, this watch movement only requires a 1.5V AA battery, (note: does not contain the battery).<br> The time of the needle hole is 0.55cm, the diameter of the minute hand is 0.35cm, and the diameter of the second hand is 0.1cm.<br> Steps for installing the hands:<br> The first step is to install the hour hand.<br> The second part is to install the minute hand.<br> The third part is to install the second hand, the hands are all aligned at 12 o'clock, and the pointer should be kept parallel and not rubbed.<br> Pay special attention to the fact that the second hand does not scratch the glass to avoid time errors.