Our M19 high-torque extended "I" shaft clock motor comes pre-installed and concealed in our MC motor cover ready to mount to your wall or flat surface.  Motor cover measures 3 3/8" diameter x 1" deep.  The shaft will add 3/4" to overall depth. Comes with built-in hanger slot, plastic wall anchor, and screw.  Just add your new AA alkaline battery and clock hands that fit an "I" shaft clock motor. This pre-installed M19 high-torque motor will run any of OUR hands up to and including 17 3/4"hands.