Pendulum Clock Motor Choose Stem Pass 3/4 or Stem Pass 3/8#22710 Stem passes 3 8" stock Threaded stem 7 16" #22310 Stem passes 3 4" stock Threaded stem 13 16" Free Clock Hands with every unit. Choose Hour & Minute hands from Hands Page Quartz Pendulum UnitsPendulum rod with bright polished 2 3 4" standard pendulum disc or 3 1 2" large pendulum disc. Standard disc does not have nut on disc. Large disc 3 1 2" has decorative nut. Either size can also be used with optional lyre grid available for extra cost.