Electronic Supply by Industrial Electronics in Milwaukee Wisconsin : Potter Brumfield, Radio Shack Stores in Milwaukee: Adjusting Knuckle (Cream) Adjusting Knuckle (Cream) ================================================================================ Staff on 06/11/2009 03:25:00 Shaft screws into the adjusting knuckle. For an ultra low-profile mount, screw directly to one of our Mounting Bases! Quality manufactured and fully adjustable: 210 Tilt, 360 Turn & 360 Rotation Knob and tamper-resistant set-screw adjusting options included Overall knuckle height approximately 2.5" (63.5mm) 1/4-20 mounting stud with lock ring