Panavise 717-09 9-Inch Slimline 2000 Pedestal Mount Overall mount height (including shaft) is 9-Inch (228.6mm) 210 degree Tilt, 360 Turn and 360 Rotation at both ends Foot measures 2.5-Inch x 2.5 (63.5mm x 63.5mm) Rectangular AMPS pattern: 30mm x 38mm (1.181 x 1.496) on center Housings at the head and foot incorporate a serrated contact design that increases gripping power at the adjusting points