Quartz Diy Clock Movement Mechanism Battery Operated Diy Repair Kits

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;.