Good package: comes with specially designed blister card rd box and instructions, convenient to carry and useClock mechanism size: total shaft length is 20 mm (0.79 inches), thread length is 11.7 mm (0.46 inches) Jump second movement, suitable for 4 - 8 mm (0.16 - 0.31 inches) thickness clock panelSize from the center of the hole to the tip: the hour hand approx. 80 mm/ 3.1 inches The minute hand is approx. 110 mm/ 4.3 inches in length The second caps are approx. 7 mm/ 0.28 inchesEasy to install: the pendulum clock movement kits are easy to install Simple and elegant design, these replacement parts suit well to different styles of clock frameNote: when install this clock movement kit, please keep the hour hand and minute hand parallel, and check the sizes before buying Pendulum Clock Movement Replacement Long Shaft Pendulum Quartz Clock Movement Mechanism (Shaft Length 4/5 Inch/ 20 mm)