Brand new Quartex quartz clock movement -All of my mini quartz movements require about a 3/8″ (9mm) hole going through the dial for the shaft of the movement to go through. -This is a complete kit with one set of hands out of several to choose from and mounting hardware. -5 different shaft sizes to choose from Which dial/face does your clock have? -For dials up to 1/8″ thick you need a 5/16″ threaded shaft which has an overall length of 9/16″ -For dials up to 1/4″ thick you need a 7/16″ threaded shaft which has an overall length of 11/16″ -For dials up to 3/8″ thick you need a 9/16″ threaded shaft which has an overall length of 13/16″ For dials up to 1/2″ thick you need a 11/16″ threaded shaft which has an overall length of 15/16″ -Not sure what to measure? Refer to picture 4 in the listing for help. Movement specifications -Case size: 2 7/32″H (5.6cm)x 2 7/32″W (5.6cm) x 5/8″D (1.6cm). -Shaft Diameter: 5/16″ (8mm) -Motor: Self-Start, 1 second step. -Rear Hand Set Knob -Requires 1 ‘AA’ cell battery (not included) Satisfaction and quality guaranteed! -I offer a 1 year guarantee on my movements, no one else on ebay does that for these movements, send it back and ill give you a refund or replace your movement! -Check my feedback i make sure that customer service is first priority. -If you have any questions feel free to ask!