Clock making is a snap using this quartz clock movement kit. Design your own custom clock face from scratch, or find an existing clock face that just needs a little updating. Once you have the clock face, you can quickly and easily install the included movement mechanism and hands to complete your project. Details:For use on 3/4" (1.9 cm) thick clock surfaces8 piece kitRequires 1 AA battery, not includedContents:1 quartz clock movement mechanism (3/4"/1.9cm)1 rubber washer1 brass washer1 hex nut1 open nut1 hour hand1 minute hand1 second hand