Melody effect: the chiming pendulum movement plays the Westminster melody on the hour and automatically silences the chimes after 9 PM until 6 AM. Practical tools for you: these pendulum trigger clock movement replacement parts are suitable for designing and building your own pendulum clock, allowing for easy replacement and customization. Please note that the hands are made of aluminum; avoid applying excessive pressure during installation to prevent bending. Type: Quartz Pendulum Trigger Clock Movement Chime Melody Kit Pendulum clock movement size: total shaft length is 17 mm (0.67 inch), thread length is 9.7 mm (0.38 inch); jump second movement suitable for clock panels 26 mm (0.080.24 inch) thick. Hole center to tip hand size: hour hands measure approximately 70.5 mm (2.78 inch), 70 mm (2.76 inch), and 82 mm (3.2 inch); minute hands measure approximately 101 mm (3.98 inch), 92 mm (3.6 inch), and 117 mm (4.6 inch); includes two second hands approximately 100 mm (3.9 inch) each and one second hand cap approximately 7 mm (0.28 inch). Color: As shown Material: Plastic + Aluminum Package Contents: 1 x Swing movement (110x56x20mm) 1 x Gold pendulum 1 x Music box 3 x Hour hand 3 x Minute hand 2 x Second hand 1 x Second hand cap Note: Only the items listed above are included. Light reflection and differences in display screens may cause slight variations between the color of the item in the photo and the actual product. Measurement error allowance is +/- 13 cm.