Description: -Good DIY clock supply/accessory/movements with pointers. -Suitable for repairing, replacing the broken parts of a clock or serving as good handwork material to make a clock by yourself. -Tidal movement is suitable for people living near the sea, can accurately know the time of high tide and low tide, also suitable for diy products. -From the center hole measurement, the hour hand is 90mm, the diameter of the second head is 7mm, and it is suitable for hanging clocks with a panel which diameter of about 200-250mm and thickness of about 4-6 mm. -Match power: this clock movement replacement just need one of AA battery. If the scale is not accurate, the tide will be inaccurate Specification: Shape size: 56 x 56 x 16.2mm/2.2 x 2.2 x 0.63inch Total Shaft Length: 13.8 mm/0.54inch Thread Height: 8.7 mm/0.34inch Package Includes: 1 Piece Clock Movement 1 Piece Hook 1 Piece Hour Hand 1 Piece Second Head 1 Piece Hexagonal Nut 1 Piece Spring Washer 1 Piece Rubber Pad(5 Pack) Note: Please allow 1-3mm error due to manual measurement.Thanks.