ITEM NAME:15mm Long Thread Quiet Mute Quartz Clock Movement Mechanism DIY RepairToolParLJ 15mm Long Thread Quiet Mute Quartz Clock Movement Mechanism DIY RepairToolParLJ #aucsearchbutton #aucsearchbutton:hover { cursor: pointer;.Screw Thread Rod Length : 15mm. - Easy and simple design. Great for repairing, replacing or making a clock. - Crystal Frequency : 32.768KHz. - Circumferential Output Frequency : 0.5Hz. - Shaft Length : 22mm.