ADJUST THE SHAFT LENGTH AFTER THE CAMERA IS INSTALLED! An adjustable shaft adds extra flexibility on the job site. • Adjustable shaft: overall mount length from 9.375" (238.1mm) to 13.625" (346.1mm) • Shaft locks tightly and is indexed to prevent rotation • Use the Tri-Foot Base [4" (101.6mm) outside diameter with three 0.265" (6.7mm) holes on a 3.25" (82.5mm) bolt circle] for solid surfaces, or the T-Bar Clip for drop ceiling rails • Full range of motion: 210° Tilt, 360° Turn & 360° Rotation • 1/4-20 mounting stud with lockring • Knob and tamper-resistant set-screw adjusting options included Black onliy