Annong Quartz Large Wall Clock Movement Mechanism DIY Replacement Parts Kit + Hands Movement size: 5.6 x 5.6 x 1.6 cm Second hand length: 12.3 cm; Minute hand length: 8.3 cm; Hour hand length: 6 cm Principal axis size: 18.5 mm Screw thread size: about 10.5 mm Mode: silent mode; Need one AA battery.(not included); Great choice for DIY design