0.5-Inch (12.7mm) diameter solid steel shaft. Length of mount from base to front of mount: 4.0-Inch (102mm). * Length of mount from bottom of angle to top of mount: 3.375-Inch (85.7mm) * 1/4-20 stud with lockring; adjustable at the camera (190 degreesTilt, 360 degreesTurn & 360 degreesRotation * Knob and tamper-resistant set-screw adjusting options included. Matching vinyl cover adds a finished look! * 2-Inch (50.8mm) round base with four 0.188-Inch (4.8mm) holes on 1.6-Inch (40.6mm) bolt circle * 0.5" (12.7mm) diameter solid steel shaft * Length of mount from base to front of mount: 4.0" (102mm) * Length of mount from bottom of angle to top of mount: 3.375" (85.7mm)