Flexible shaft C-FAM-201 included with swivel ball joint on top provides multiple positioning options. Base bracket with heavy duty disc design allows for additional positioning and movement options. Base bracket mounts under the passenger side seat bolt (closest to transmission hump). Works with 1. 20" x 1. 50" (30mm x 38mm) AMPS hole pattern. Keyboard or device can be removed by loosening ball mount at top. Use C-ADP-112 adaptor for attaching to devices with VESA 75 hole pattern (sold separately).