Hansen J556RC-5-6 electric clock motor, 110 volts, 60 cycle, 60.3 mm (2-3/8") (H) x 47.6 mm (1-7/8") (W) x 34.9 mm (1-3/8") (D). Overall shaft length 25.4 mm (1"), thick portion closest to the motor measures 9.5 mm (3/8") in length with a diameter of 9.5 mm (3/8"), thin post measures 3.2 mm (1/8") diameter, length 12.7 m (1/2"). This thin post is drilled through at the midway point. 2 holes for mounting. The motor is marked 630 110V 60HZ 4W 1 RPM J556RC-5-6 0211.