Description: Made from high grade material, practical for use. Sweep silent movement type. No annoying sound. Great part for repairing, replacing or making a clock. Quartz clock movement mechanism repair tool. Clock movement only, the clock hands are not included. There are 2 types of movements--no thread snap in type and thread shaft type. 8.9mm snap in type movement is suit for small clocks; 12.4mm shaft (4.5mm thread) is suit for 3mm thickness clock panel; 14.8mm shaft (6.1mm thread) is suit for 5mm thickness clock panel; 17mm shaft (8.6mm thread)is suit for 7mm thickness clock panel; 20mm shaft (11.1mm thread) is suit for 10mm thickness clock panel; 23.5mm shaft (15.1mm thread) is suit for 14mm thickness clock panel. Specification: Material: Metal, Plastic Size: 55x55x15mm/2.17x2.17x0.59inch (LxWxH) Package Includes: 1 Piece Clock Movement Note: Since the size above is measured by hand, the size of the actual item could be slightly different from the size above. Due to the lighting effects, monitor settings, etc. There could be some slight difference in the color of the pictures and the actual item.