Panavise 809 Camera Window Suction-Cup Mount Allows Users To Quickly Move Cameras From Vehicle To Vehicle Or Location To Location 1/4-20 Stud With Lock Ring Powerful Suction Pad Attaches To Any Smooth, Flat, Nonporous Surface Including Windows, Sheet Metal, Fiberglass, Etc. Full Range Of Motion At The Camera-knob Adjustment 210 Degree Tilt, 360 Degree Turn and 360 Degree Rotation Ratcheted Arm Has 140 Degree Vertical Motion Suction pad is 3.4' (86.4mm) in diameter Overall length is approximately 4.5' (114.3mm) Recommended for cameras weighing up to 3 lbs. (1.4kg) Combine with the PanaVise 3-inch extension (model#: 812-03) which provides extra versatility and clearance for mounting cameras on steep windshields