Clock Movement Mechanism - Ultra silent Scanning Design, two different shaft length quartz movement for your choice. Sweep clock movemen without any noise which can offer your sleep a silent environment. Two Clock Mechanism Size -Short total shaft length 16 mm (0.63 in), thread length 8mm (0.315 in), suit for 3 - 6 mmthickness clock panel. Long Total sharft length 23 mm (0.9 in),thread length 15.4 mm (0.6 in),suitable for 9 - 13 mm thickness clock panel. DIY Wall Clock Repair Parts Kits: Including 2 x different size clock movement,5 Pairs Hour Minute hands,3 xSecond hand and 2second caps, easy for installation,Multiple choices in one set. Clock Hands Size:The size indicated in the picture shall prevail, they were made of aluminum, please do not install them with too much pressure or they will be bent, please check the sizes before buying. Wide Application - DIY quartz wall clock replacement movement parts, suitable for repairing, replacing or making a clock,most can be applied to cross-stitch, three-dimensional embroidery, craft clock, frameless draw clock, etc.