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 2-6 mm (0.08-0.24 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). Melody effect: the chiming pendulum movement plays the Westminster melody on the hour and automatically silences the chimes from 9 PM to 6 AM. Practical tools for you: these pendulum clock movement replacement parts are ideal for designing and building your own pendulum clock or replacing existing components to achieve a new look. Please note that the hands are made of aluminum; avoid applying excessive pressure during installation to prevent bending. Color: black Material: plastic 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 Only the above package content is included; other items are not part of this package. Note: Lighting and display differences may cause slight variations in color between the image and the actual item. Measurement error allowance is +/- 1-3 cm.