Takane Thin Mini Clock Movement And Pendulum Kit - Clock Repair Kit - Choose a Size Shaft Diameter: 5/16". Threaded Shaft Length: 7/16". Overall Shaft Length: 3/4". 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 the full product description.