Takane Thin Mini Pendulum Movement - Clock Repair Kit - Choose a Size Shaft Diameter: 5/16". Threaded Shaft Length: 5/16". Overall Shaft Length: 1/2". Pendulum Movement, Made By Takane. Capable Of Running Up To A 23" Battery Pendulum. Battery: 1 'AA' (not included) Includes all mounting hardware, a metal wall hangar, an adjustable 16" pendulum with bob, and hour and minute hands (upon request only, sweep sold separately). Please see below for full product description (including how to receive hands).