Quartz Clock Pendulum Bob 3 1/2" is a brass finished pendulum bob to be used with quartz clock movements: 74-774, 74-776, 74-778, 74-780 to 785, 74-787, 74-788, 74-7882. and the pendulum capsule 74-786. Quartz Clock Pendulum Large has a bob that measures 3 1/2" in diameter. This bob fits pendulum rods 76-070-R1 to 76-070-R4
*Pendulum rod sold separately.