Pack of 20 Clock Movements. Standard clock movement with integral hanger, fixing hardware and push fit Hr/Min/Sec hands. Designed to fit a 10mm diameter hole with a maximum material thickness of 8mm. 55mm square black mechanism housing approx. 15mm thick with a spindle projection of 10mm. 60mm minute hand, 40mm hour and 75mm second hand. Requires 1x AA Battery.