Clock Movement Pendulum Kit - Clock Repair Kit - Choose a Size Can Run Up To A 27" Long Battery Pendulum. Comes with a 16" adjustable pendulum rod and a bob. The Case Size is 2-1/8"W x 3-7/8"H x 3/4" Depth. Standard 'I' shaft. Includes hour and minute hands(If Requested), all mounting hardware plus basic instructions. Threaded Shaft Length: 1/2". Overall Shaft Length: 3/4".